Contents 1 Etymology and definition 2 Structure 2.1 Overview 2.2 Vaginal opening and hymen 2.3 Variations and size 2.4 Development 2.5 Microanatomy 2.6 Blood and nerve supply 3 Function 3.1 Secretions 3.2 Sexual activity 3.3 Childbirth 3.4 Vaginal microbiota 4 Clinical significance 4.1 General 4.2 Pelvic examinations 4.3 Infections, diseases, and safe sex 4.4 Effects of aging and childbirth 4.5 Surgery 4.6 Anomalies and other health issues 5 Society and culture 5.1 Perceptions, symbolism and vulgarity 5.2 In contemporary literature and art 5.3 Influence on modification 6 Other animals 7 See also 8 References 9 External links

Etymology and definition The term vagina is from Latin meaning "sheath" or "scabbard"; the plural of vagina is either vaginae, or vaginas.[1] The vagina may also be referred to as "the birth canal" in the context of pregnancy and childbirth.[2][3] Although by its dictionary and anatomical definitions, the term vagina refers exclusively to the specific internal structure, it is colloquially used to refer to the vulva or to both the vagina and vulva.[4][5] Using the term vagina to mean "vulva" can pose medical or legal confusion; for example, a person's interpretation of its location might not match another person's interpretation of the location.[4][6] Medically, the vagina is the muscular canal between the hymen (or remnants of the hymen) and the cervix, while, legally, it begins at the vulva (between the labia).[4] It may be that the incorrect use of the term vagina is due to not as much thought going into the anatomy of the female genitals, and that this has contributed to an absence of correct vocabulary for the external female genitalia among both the general public and health professionals. Because of this and because a better understanding of female genitalia can help combat sexual and psychological harm with regard to female development, researchers endorse correct terminology for the vulva.[6][7][8]

Structure Overview Pelvic anatomy including organs of the female reproductive system The human vagina is an elastic muscular canal that extends from the vulva to the cervix.[9][10] It is pink in color, and it connects the outer vulva to the cervix of the uterus. The part of the vagina surrounding the cervix is called the fornix.[11] The opening of the vagina lies in the urogenital triangle in the perineum, between the opening of the urethra and the anus. The vaginal canal then travels upwards and backwards, between the urethra at the front, and the rectum at the back. Near the upper vagina, the cervix protrudes into the vagina on its front surface at approximately a 90 degree angle.[12] The vaginal and urethral openings are protected by the labia.[13] When not sexually aroused, the vagina is a collapsed tube, with the anterior and posterior walls placed together. The lateral walls, especially their middle area, are relatively more rigid. Because of this, the collapsed vagina has an H-shaped cross section.[10][14] Behind, the inner vagina is separated from the rectum by the recto-uterine pouch, the middle vagina by loose connective tissue, and the lower vagina by the perineal body.[11] Where the vaginal lumen surrounds the cervix of the uterus, it is divided into four continuous regions or vaginal fornices; these are the anterior, posterior, right lateral, and left lateral fornices.[9][10] The posterior fornix is deeper than the anterior fornix.[10] Different muscles and ligaments support the vagina at its upper, middle, and lower portions. At the upper part, three sets of ligaments attached to the upper surface of the levator ani give support to the cervix and vagina. These are the cardinal ligaments (transverse cervical ligaments), pubocervical ligaments, and the uterosacral ligaments the sacrocervical ligaments. The middle third of the vagina involves the urogenital diaphragm and the pelvic floor. The lower third is supported by the perineal body that is also attached to the levator ani.[9][15][16] Vaginal opening and hymen The vaginal opening is at the posterior end of the vulval vestibule, behind the urethral opening. The opening to the vagina is closed by the labia minora in virgins and in females who have never given birth (nulliparous), but may be exposed in females who have given birth (parous).[10][17] The hymen is a membrane of tissue that surrounds or partially covers the vaginal opening.[10] The effects of intercourse and childbirth on the hymen are variable. Where it is broken, it may completely disappear or remnants known as carunculae myrtiformes may persist. Otherwise, being very elastic, it may return to its normal position.[18] Additionally, the hymen may be lacerated by disease, injury, medical examination, masturbation or physical exercise. For these reasons, virginity cannot be definitively determined by examining the hymen.[18][19] Variations and size Main article: Human vaginal size The length of the vagina varies between women of child-bearing age. Because of the presence of the cervix in the front wall of the vagina, there is a difference in length between the front (anterior) wall, approximately 7.5 cm (2.5 to 3 in) long, and the back (posterior) wall, approximately 9 cm (3.5 in) long.[10][20] During sexual arousal, the vagina expands both in length and width. If a woman stands upright, the vaginal canal points in an upward-backward direction and forms an angle of approximately 45 degrees with the uterus.[10][15] The vaginal opening and hymen also vary in size; in children, although the hymen commonly appears crescent-shaped, many shapes are possible.[10][21] Development Further information: Development of the reproductive system An illustration showing a cut-away portion of the vagina and upper female genital tract (only one ovary and fallopian tube shown). Circular folds (also called rugae) of vaginal mucosa can be seen The vaginal plate is the precursor to the vagina.[22] During development, the vaginal plate begins to grow where the fused ends of the paramesonephric ducts (Müllerian ducts) enter the back wall of the urogenital sinus. As the plate grows, it separates the sinus into the urethra and the vagina, and extends the vagina by pushing the cervix deeper. Originally full of cells, as the central cells of the plate break down, the lumen of the vagina is formed.[22] This usually occurs by the twenty to twenty-fourth week of development. If the lumen does not form, or is incomplete, membranes known as vaginal septae can form across or around the tract, causing obstruction of the outflow tract later in life.[22] During sexual differentiation, without testosterone, the urogenital sinus persists as the vestibule of the vagina. The two urogenital folds of the genital tubercle form the labia minora, and the labioscrotal swellings enlarge to form the labia majora.[23][24] Sources differ on which portion of the vagina is formed from the Müllerian ducts and which from the urogenital sinus by the growth of the sinovaginal bulb.[22][25] Dewhurst's Textbook of Obstetrics and Gynaecology states, "Some believe that the upper four-fifths of the vagina is formed by the Müllerian duct and the lower fifth by the urogenital sinus, while others believe that sinus upgrowth extends to the cervix displacing the Müllerian component completely and the vagina is thus derived wholly from the endoderm of the urogenital sinus." It adds, "It seems certain that some of the vagina is derived from the urogenital sinus, but it has not been determined whether or not the Müllerian component is involved."[22] Microanatomy Medium-power magnification micrograph of a H&E stained slide showing a portion of a vaginal wall. Stratified squamous epithelium and underling connective tissue can be seen. The deeper muscular layers are not shown. The black line points to a fold in the mucosa. Vaginal mucosa normal vs. menopause The wall of the vagina from the lumen outwards consists firstly of a mucous membrane of stratified squamous epithelium with an underlying lamina propria of connective tissue. Secondly, there is a layer of smooth muscle with bundles of circular fibers internal to longitudinal fibers. Lastly is an outer layer of connective tissue called the adventitia. Some texts list four layers by counting the two sublayers of the mucosa (epithelium and lamina propria) separately.[26][27] The lamina propria is rich in blood vessels and lymphatic channels. The muscular layer is composed of smooth muscle fibers, with an outer layer of longitudinal muscle, an inner layer of circular muscle, and oblique muscle fibers between. The outer layer, the adventitia, is a thin dense layer of connective tissue, and it blends with loose connective tissue containing blood vessels, lymphatic vessels and nerve fibers that is present between the pelvic organs.[12][27][20] The vaginal mucosa is absent of glands. It forms folds (or rugae), which are more prominent in the outer third of the vagina; they appear as transverse ridges and their function is to provide the vagina with increased surface area for extension and stretching.[9][10] Folds of mucosa (or vaginal rugae) are shown in the front third of a vagina A normal cervix of an adult as seen through the vagina (per vaginam or PV) using a bivalved vaginal speculum. The blades of the speculum are above and below and stretched vaginal walls are seen on the left and right. The epithelium of the ectocervix is continuous with the vaginal epithelium.[28] The vaginal epithelium is made up of layers of cells, including the basal cells, the parabasal cells, the superficial squamous flat cells, and the intermediate cells.[29] The basal layer of the epithelium is the most mitotically active and reproduces new cells.[30] The superficial cells shed continuously and basal cells replace them.[10][31][32] Estrogen induces the intermediate and superficial cells to fill with glycogen.[32][33] Cells from the lower basal layer transition from active metabolic activity to death (apoptosis). In these mid-layers of the epithelia, the cells begin to lose their mitochondria and other organelles.[30][34] The cells retain an usually high level of glycogen compared to other epithelial tissue in the body.[30] Before puberty, the epithelium lining the vagina is cuboidal. The effects of estrogen produced at puberty change this cell type to squamous.[35] Under the influence of maternal estrogen, the vagina of a newborn has a thick stratified squamous epithelium for two to four weeks after birth. After that, the epithelium remains thin with only a few layers of cells without glycogen.[32] The epithelium also has few rugae and is red in color before puberty.[4] When puberty begins, the epithelium thickens and glycogen containing cells are formed again, under the influence of the girl's rising estrogen levels.[32] Finally, the epithelium thins out during menopause onward and eventually ceases to contain glycogen, because of the lack of estrogen.[10][31][36] Flattened squamous cells are more resistant to both abrasion and infection.[35] The permeability of the epithelium allows for an effective response from the immune system since antibodies and other immune components can easily reach the surface.[17] The vaginal epithelium differs from the similar tissue of the skin. The epidermis of the skin is relatively resistant to water because it contains high levels of lipids. The vaginal epithelium contains lower levels of lipids. This allows the passage of water and water-soluble substances through the tissue.[17] Keratinization happens when the epithelium is exposed to the dry external atmosphere.[10] In abnormal circumstances, such as in pelvic organ prolapse, the mucosa may be exposed to air, becoming dry and keratinized.[37] Blood and nerve supply Blood is supplied to the vagina mainly via the vaginal artery, which emerges from a branch of the internal iliac artery or the uterine artery.[9][38] The vaginal arteries anastamose (are joined) along the side of the vagina with the cervical branch of the uterine artery; this forms the azygos artery,[38] which lies on the midline of the anterior and posterior vagina.[11] Other arteries which supply the vagina include the middle rectal artery and the internal pudendal artery,[10] all branches of the internal iliac artery.[11] Three groups of lymphatic vessels accompany these arteries; the upper group accompanies the vaginal branches of the uterine artery; a middle group accompanies the vaginal arteries; and the lower group, draining lymph from the area outside the hymen, drain to the inguinal lymph nodes.[11][39] Ninety-five percent of the lymphatic channels of the vagina are within 3 mm of the surface of the vagina.[40] Two main veins drain blood from the vagina, one on the left and one on the right. These form a network of smaller veins, the vaginal venous plexus, on the sides of the vagina, connecting with similar venous plexuses of the uterus, bladder, and rectum. These ultimately drain into the internal iliac veins.[11] The nerve supply of the upper vagina is provided by the sympathetic and parasympathetic areas of the pelvic plexus. The lower vagina is supplied by the pudendal nerve supplying the lower area.[10][11]

Function Secretions Main articles: Vaginal discharge and Vaginal lubrication Vaginal secretions are primarily from the uterus, cervix, and vaginal epithelium in addition to minuscule vaginal lubrication from the Bartholin's glands upon sexual arousal.[10] It takes little vaginal secretion to make the vagina moist; secretions may increase during sexual arousal, the middle of menstruation, a little prior to menstruation, and during pregnancy.[10] Menstruation (also known as a "period" or "monthly") is the regular discharge of blood and mucosal tissue (known as menses) from the inner lining of the uterus through the vagina.[41] The vaginal mucous membrane varies in thickness and composition during the menstrual cycle,[42] which is the regular, natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible.[43][44] Different hygiene products such as tampons, menstrual cups, and sanitary napkins are available to absorb or capture menstrual blood. The Bartholin's glands, located near the vaginal opening, were originally considered the primary source for vaginal lubrication, but further examination showed that they provide only a few drops of mucus.[45] Vaginal lubrication is mostly provided by plasma seepage known as transudate from the vaginal walls. This initially forms as sweat-like droplets, and is caused by increased fluid pressure in the tissue of the vagina (vasocongestion), resulting in the release of plasma as transudate from the capillaries through the vaginal epithelium.[45][46][47] Before and during ovulation, the mucus glands within the cervix secrete different variations of mucus, which provides an alkaline, fertile environment in the vaginal canal that is favorable to the survival of sperm.[48] Following menopause, vaginal lubrication naturally decreases.[49] Sexual activity Further information: Human sexual activity and Human female sexuality Nerve endings in the vagina can provide pleasurable sensations when the vagina is stimulated during sexual activity. Women may derive pleasure from one part of the vagina, or from a feeling of closeness and fullness during vaginal penetration.[50] The vagina is not rich in nerve endings, and this often contributes to a woman's inability to receive sufficient sexual stimulation, including orgasm, solely from vaginal penetration.[50][51][52] While the vagina's having a greater concentration of nerve endings and therefore greater sensitivity near its entrance (the outer one-third or lower third) is commonly cited in research,[51][52][53] some scientific examinations of vaginal wall innervation indicate no single area with a greater density of nerve endings.[54][55] Other research indicates that only some women have a greater density of nerve endings in the anterior vaginal wall.[54][56] The higher concentration of nerve endings in the outer part, rather than along the whole length,[57] makes childbirth pain significantly more tolerable.[52][58][59] Pleasure can be derived from the vagina in a variety of ways. In addition to penile penetration, pleasure can come from masturbation, fingering, oral sex (cunnilingus), or specific sex positions (such as the missionary position or the spoons sex position).[60] Heterosexual couples may engage in cunnilingus or fingering as forms of foreplay to incite sexual arousal, with penile-vaginal penetration as the primary sexual activity, or they may engage in them in addition to penile-vaginal penetration; in other cases, heterosexual couples use the latter acts as a way to preserve virginity or as a type of birth control.[61][62] By contrast, lesbians and other women who have sex with women commonly engage in cunnilingus or fingering as main forms of sexual activity.[63][64] Some women and couples use sex toys, such as a vibrator or dildo, for vaginal pleasure.[65] Other women may adopt Kegel exercises,[66] with the aim of tightening the vagina to increase sexual pleasure.[67] The Kama Sutra, an ancient Hindu text written by Vātsyāyana, which includes a number of sexual positions, may also be used to increase sexual pleasure,[67] with special emphasis on female sexual satisfaction.[68] The clitoris additionally plays a part in vaginal stimulation, as it is a sex organ of multiplanar structure containing an abundance of nerve endings, with a broad attachment to the pubic arch and extensive supporting tissue to the mons pubis and labia; it is centrally attached to the urethra, and research indicates that it forms a tissue cluster with the vagina. This tissue is perhaps more extensive in some women than in others, which may contribute to orgasms experienced vaginally.[51][69][70] During sexual arousal, and particularly the stimulation of the clitoris, the walls of the vagina lubricate. This begins after ten to thirty seconds of sexual arousal, and increases in amount the longer the woman is aroused.[71] It reduces friction or injury that can be caused by insertion of the penis into the vagina or other penetration of the vagina during sexual activity. The vagina lengthens during the arousal, and can continue to lengthen in response to pressure; as the woman becomes fully aroused, the vagina expands in length and width, while the cervix retracts.[71][72] With the upper two-thirds of the vagina expanding and lengthening, the uterus rises into the greater pelvis, and the cervix is elevated above the vaginal floor, resulting in tenting of the mid-vaginal plane.[71] This is known as the tenting or ballooning effect.[73] As the elastic walls of the vagina stretch or contract, with support from the pelvic muscles, to wrap around the inserted penis (or other object),[53] this stimulates the penis and helps to cause a man to experience orgasm and ejaculation, which in turn enables fertilization.[74] An area in the vagina that may be an erogenous zone is the G-spot. It is typically defined as being located at the anterior wall of the vagina, a couple or few inches in from the entrance, and some women experience intense pleasure, and sometimes an orgasm, if this area is stimulated during sexual activity.[54][56] A G-spot orgasm may be responsible for female ejaculation, leading some doctors and researchers to believe that G-spot pleasure comes from the Skene's glands, a female homologue of the prostate, rather than any particular spot on the vaginal wall; other researchers consider the connection between the Skene's glands and the G-spot area to be weak.[54][55][56] The G-spot's existence, and existence as a distinct structure, is still under dispute, as its reported location can vary from woman to woman, appears to be nonexistent in some women, and is hypothesized to be an extension of the clitoris and therefore the reason for orgasms experienced vaginally.[54][58][70] Childbirth The fetus, moving through the vagina, must pass through the lesser pelvis. The vagina is the birth canal for the delivery of a baby. When labor (a physiological process preceding delivery) nears, several symptoms may occur, including vaginal discharge, and the rupture of membranes (water breaking) that can result in a gush of amniotic fluid[75] or an irregular or small stream of fluid from the vagina.[76][77] Water breaking most commonly happens during labor; however, it can occur before labor (known as premature rupture of membranes) and this happens in 10% of cases.[76][78] Braxton Hicks contractions are also a sign of nearing labor, but not all women notice them.[75] Among women giving birth for the first time, they are mistaken for actual contractions, and are usually very strong in the days leading up to labor.[79] As the body prepares for childbirth, the cervix softens, thins, moves forward to face the front, and begins to open. This allows the fetus to settle or "drop" into the pelvis.[75] As the fetus settles into the pelvis, pain from the sciatic nerves, increased vaginal discharge, and increased urinary frequency can occur. While these symptoms are likelier to happen after labor has begun for women who have given birth before, they may happen ten to fourteen days before labor in women experiencing labor for the first time.[75] The fetus begins to lose the support of the cervix when contractions begin. With cervical dilation reaching a diameter of more than 10 cm (4 in) to accommodate the head of the fetus, the head moves from the uterus to the vagina.[75] The elasticity of the vagina allows it to stretch to many times its normal diameter in order to deliver the child.[20] An injection for pain control during childbirth is often administered through the vaginal wall and near the pudendal nerve. This nerve carries sensations from the lower part of the vagina and vulva. This is only used late in labor, before the baby's head emerges. With a pudendal nerve block, there is some relief from the pain and the laboring woman remains awake, alert, and able to push the baby out. The baby is not affected by this medicine, and its administration carries very few disadvantages.[80] Vaginal births are more common, but if there is a risk of complications a caesarean section (C-section) may be performed. In 2017, about a third of deliveries in the US were by C-section.[81] The vaginal mucosa has an abnormal accumulation of fluid (edematous) and is thin, with few rugae, a little after birth. The mucosa thickens and rugae return in approximately three weeks once the ovaries regain usual function and estrogen flow is restored. The vaginal opening gapes and is relaxed, until it returns to its approximate pre-pregnant state six to eight weeks after delivery, known as the postpartum period; however, it will maintain a larger shape than it previously had.[82] After giving birth there is a phase of vaginal discharge called lochia that can vary significantly in the amount of loss and its duration but can go on for up to six weeks.[83] Vaginal microbiota Main article: Vaginal flora Further information: List of microbiota species of the lower reproductive tract of women The vaginal flora is a complex ecosystem that changes throughout life, from birth to menopause. The vaginal microbiota resides in and on the outermost layer of the vaginal epithelium.[17] This microbiome consists of species and genera which typically do not cause symptoms or infections in women with normal immunity. The vaginal microbiome is dominated by Lactobacillus species.[84] These species metabolize glycogen, breaking it down into sugar. Lactobacilli metabolize the sugar into glucose and lactic acid.[85] Under the influence of hormones, such as estrogen, progesterone and follicle-stimulating hormone (FSH), the vaginal ecosystem undergoes cyclic or periodic changes.[85]

Clinical significance General An ultrasound showing the urinary bladder (1), uterus (2), and vagina (3) The vagina is self-cleansing and therefore usually does not need special hygiene.[86] Clinicians generally discourage the practice of douching for maintaining vulvovaginal health.[86][87] Since the vaginal flora gives protection against disease, any disturbance of this balance may cause many undesirable outcomes, including yeast infection and abnormal discharge.[86] The healthy vagina of a woman of child-bearing age is acidic, with a pH normally ranging between 3.8 and 4.5 due to the degradation of glycogen to lactic acid by enzymes secreted by Lactobacillus gasseri, a normal commensal of the vaginal flora.[85] The low pH prohibits growth of many strains of pathogenic microbes.[85] The acidic balance of the vagina may also be affected by pregnancy, menstruation, diabetes, birth control pills, certain antibiotics, illness, poor diet, and stress (such as from a lack of sleep).[88][89] Any of these changes to the acidic balance of the vagina may contribute to yeast infection.[88] Intravaginal administration is a route of administration where the medication is inserted into the vagina as a creme or tablet. Pharmacologically, this has the potential advantage of promoting therapeutic effects primarily in the vagina or nearby structures (such as the vaginal portion of cervix) with limited systemic adverse effects compared to other routes of administration.[90][91] Medications used to ripen the cervix and induce labor are commonly administered via this route, as are estrogens, contraceptive agents, propranolol, and antifungals. Vaginal rings can also be used to deliver medication, including birth control in contraceptive vaginal rings. These are inserted into the vagina and provide continuous, low dose and consistent drug levels in the vagina and throughout the body.[92][93] Lacerations or other injuries to the vagina can occur during sexual assault or sexual abuse.[4][94] These can be tears, bruises, inflammation and abrasions. Sexual assault with objects can damage the vagina and X-ray examination may reveal the presence of foreign objects.[4] Pelvic examinations A disposable plastic bi-valved vaginal speculum used in gynecological examination Vaginal health can be assessed during a pelvic examination, along with the health of most of the organs of the female reproductive system.[94][95][96] Such exams may include the Pap test. In the United States, Pap test screening is recommended starting around 21 years of age until the age of 65. However, other countries do not recommend pap testing in non-sexually active women.[97] Guidelines on frequency vary from every three to five years.[97][98][99] Pelvic exams are most often performed when there are unexplained symptoms of discharge, pain, unexpected bleeding or urinary problems.[94][100][101] Excluding the Pap test, health recommendations state there is little benefit but evidence of harm that comes with pelvic exams on asymptomatic, nonpregnant adult women.[102] During the exam, the vaginal opening is assessed for position, symmetry, presence of the hymen, and shape. The vagina is assessed internally by the examiner with gloved fingers, before the speculum is inserted, to note the presence of any weakness, lumps or nodules. Inflammation and discharge are noted if present. During this time, the Skene's and Bartolin's glands are palpated to identify abnormalities in these structures. After the external evaluation of the vagina is complete, the speculum, an instrument to visualize internal structures, is carefully inserted to make the cervix visible.[94][96] Examination of the vagina may also be done during a cavity search.[103] If consent is given, a pelvic examination is part of the assessment of sexual assault.[104] Pelvic exams are also performed during pregnancy, and women with high risk pregnancies have exams more often.[94][105] A normal finding during the pelvic exam is a bluish tinge to the vaginal wall.[94] Infections, diseases, and safe sex Main articles: Vaginal disease and Safe sex Vaginal infections or diseases include yeast infection, vaginitis, sexually transmitted infections (STIs) and cancer. Lactobacillus gasseri and other Lactobacillus species in the vaginal flora provide some protection from infections by their secretion of bacteriocins and hydrogen peroxide.[106] An elevated pH (greater than 4.5) of the vaginal fluid can be caused by an overgrowth of bacteria as in bacterial vaginosis, or in the parasitic infection trichomoniasis, both of which have vaginitis as a symptom.[85][107] Vaginal flora populated by a number of different bacteria characteristic of bacterial vaginosis increases the risk of adverse pregnancy outcomes.[108] During a pelvic exam, samples of vaginal fluids may be taken to screen for sexually transmitted infections or other infections.[94][109] A vaginal infection may be indicated by a change in vaginal discharge, such as its color and odor, or the resulting symptoms of discharge such as irritation or burning.[110][111] Abnormal vaginal discharge may be caused by STIs, diabetes, douches, fragranced soaps, bubble baths, birth control pills, yeast infection (commonly as a result of antibiotic use) or another form of vaginitis.[110] While vaginitis is an inflammation of the vagina, and is attributed to several vaginal diseases, vaginismus is an involuntary tightening of the vagina muscles during vaginal penetration that is caused by a conditioned reflex or disease.[112] Vaginal discharge due to yeast infection is usually thick, creamy in color and odorless, while discharge due to bacterial vaginosis is gray-white in color, and discharge due to trichomoniasis is usually a gray color, thin in consistency, and has a fishy odor. Discharge in 25% of the trichomoniasis cases is yellow-green.[111] HIV/AIDS, human papillomavirus (HPV), genital herpes and trichomoniasis are some STIs that may affect the vagina, and health sources recommend safe sex (or barrier method) practices to prevent the transmission of these and other STIs.[113][114] Safe sex commonly involves the use of condoms, and sometimes female condoms (which give women more control). Both types can help avert pregnancy by preventing semen from coming in contact with the vagina.[115][116] There is, however, little research on whether female condoms are as effective as male condoms at preventing STIs,[116] and they are slightly less effective than male condoms at preventing pregnancy, which may be because the female condom fits less tightly than the male condom or because it can slip into the vagina and spill semen.[117] The multiple layers of the vagina provide protection from pathogens, such as Chlamydia trachomatis and Neisseria gonorrhoeae.[17] The vaginal lymph nodes can trap cancerous cells that originate in the vagina, and the nodes can be assessed for the presence of disease. Selective surgical removal (rather than total and more invasive removal) of vaginal lymph nodes reduces the risk of complications that can accompany more radical surgeries. These selective nodes act as sentinel lymph nodes.[40] Instead of surgery, the lymph nodes of concern are sometimes treated with radiation therapy administered to the patient's pelvic, inguinal lymph nodes, or both.[118] Vaginal cancer and vulvar cancer are very rare, and primarily affect older women.[119][120] Because vaginal cancer can occur at the same time as, and often develops consequently in relation to cervical cancer (a common form of cancer), it may be that their causes are the same.[119][121][122] Cervical cancer may be prevented by pap smear screening and HPV vaccines, but HPV vaccines only cover HPV types 16 and 18, the cause of 70% of cervical cancers.[123][124] Some symptoms of cervical and vaginal cancer are dyspareunia, and abnormal vaginal bleeding or vaginal discharge, especially after sexual intercourse or menopause.[125][126] However, most cervical cancers are asymptomatic (present no symptoms).[125] Vaginal intracavity brachytherapy (VBT) is used to treat endometrial, vaginal and cervical cancer. An applicator is inserted into the vagina to allow the administration of radiation as close to the site of the cancer as possible.[127][128] Survival rates increase with VBT when compared to external beam radiation therapy.[127] By using the vagina to place the emitter as close to the cancerous growth as possible, the systemic effects of radiation therapy are reduced and cure rates for vaginal cancer are higher.[129] Research is unclear on whether treating cervical cancer with radiation therapy increases the risk of vaginal cancer.[122] Effects of aging and childbirth Age and hormone levels significantly correlate with the pH of the vagina.[130] Estrogen, glycogen and lactobacilli impact these levels.[131][132] At birth, the vagina is acidic with a pH of approximately 4.5,[130] and ceases to be acidic by three to six weeks of age,[133] becoming alkaline.[134] Average vaginal pH is 7.0 in pre-pubertal girls.[131] Although there is a high degree of variability in timing, girls who are approximately seven to twelve years of age will continue to have labial development as the hymen thickens and the vagina elongates to approximately 8 cm. The vaginal mucosa thickens and the vaginal pH becomes acidic again. Girls may also experience a thin, white vaginal discharge called leukorrhea.[134] For women of reproductive age, the average vaginal pH is 3.8-4.5.[85] The vaginal microbiota of adolescent girls aged 13 to 18 years are similar to those of adult women, but research is not as clear on whether this is the same for premenarcheal or perimenarcheal girls.[132] The vaginal pH during menopause is 6.5-7.0 (without hormone replacement therapy), or 4.5-5.0 with hormone replacement therapy.[132] After menopause, the body produces less estrogen. This causes atrophic vaginitis – thinning of the vaginal walls – [10][31][135] which can lead to vaginal itching, burning, bleeding, soreness, or vaginal dryness (a decrease in lubrication).[136] Vaginal dryness can cause discomfort on its own or discomfort or pain during sexual intercourse.[136][137] Hot flashes are also characteristic of menopause.[89][138] Menopause also affects the composition of vaginal support structures. The vascular structures become fewer with advancing age.[139] Specific collagens become altered in composition and ratios. It is thought that the weakening of the support structures of the vagina is due to the physiological changes in this connective tissue.[140] Menopausal symptoms can be eased by estrogen-containing vaginal creams,[138] non-prescription, non-hormonal medications,[136] vaginal estrogen rings such as the Femring,[141] or other hormone replacement therapies,[138] but there are risks (including adverse effects) associated with hormone replacement therapy.[142][143] Vaginal creams and vaginal estrogen rings may not have the same risks as other hormone replacement treatments.[144] Stress may trigger hot flashes,[145] and make hot flashes worse during menopause,[89] but the exact origin of hot flashes is not well understood.[145] Although the Femring might be able to ease hot flashes,[141] this does not appear to be the case for other vaginal estrogen rings or vaginal creams.[143] Hormone replacement therapy can treat vaginal dryness,[141] but a personal lubricant may be used to temporarily remedy vaginal dryness specifically for sexual intercourse.[137] Some women have an increase in sexual desire following menopause.[136] Masters and Johnson's research indicates that menopausal women who continue to engage in sexual activity regularly experience vaginal lubrication similar to levels in women who have not entered menopause, and can enjoy sexual intercourse fully.[136] They may have less vaginal atrophy and fewer problems concerning sexual intercourse.[146] Vaginal changes that happen with aging and childbirth include mucosal redundancy, rounding of the posterior aspect of the vagina with shortening of the distance from the distal end of the anal canal to the vaginal opening, diastasis or disruption of the pubococcygeus muscles caused by poor repair of an episiotomy, and blebs that may protrude beyond the area of the vaginal opening.[147] Similar vaginal and labial changes may be due to significant weight gain and subsequent loss.[147] Other vaginal changes related to aging and childbirth are stress urinary incontinence, rectocele, and cystocele.[147] Physical changes resulting from pregnancy, childbirth, and menopause often contribute to stress urinary incontinence. If a woman has weak pelvic muscle support and tissue damage from childbirth or pelvic surgery, a lack of estrogen can further weaken the pelvic muscles and contribute to stress urinary incontinence.[148] The uterus can also leave its normal position and sometimes even extend past the hymen.[94] A reduction in estrogen does not cause rectocele, cystocele or uterine prolapse, but childbirth and weakness in pelvic support structures can.[146] During the third stage of labor, while the infant is being born, the vagina undergoes significant changes. A gush of blood from the vagina may be seen right before the baby is born. Lacerations to the vagina that can occur during birth vary in depth, severity and the amount of adjacent tissue involvement.[4][149] The laceration can be so extensive as to involve the rectum and anus. This event can be especially distressing to a new mother.[149][150] When this occurs, fecal incontinence develops and stool can leave through the vagina.[149] Close to 85% of spontaneous vaginal births develop some form of tearing. Out of these, 60-70% require suturing.[151][152] Lacerations from labor do not always happen.[17] Surgery The vagina, including the vaginal opening, may be altered as a result of surgeries such as an episiotomy, vaginectomy, vaginoplasty or labiaplasty.[147][153] Those who undergo vaginoplasty are usually older and have given birth.[147] A thorough examination of the vagina before a vaginoplasty is standard, as well as a referral to a urogynecologist for possible vaginal disorders.[147] With regard to labiaplasty, reduction of the labia minora is quick without hindrance, complications are minor and rare, and can be corrected. Any scarring from the procedure is minimal, and long-term problems have not been identified.[147] During an episiotomy, a surgical incision is made during the second stage of labor to enlarge the vaginal opening for the baby to pass through.[17][127] Although its routine use is no longer recommended,[154] and not having an episiotomy is found to have better results than an episiotomy,[17] it is one of the most common medical procedures performed on women. The incision is made through the skin, vaginal epithelium, subcutaneous fat, perineal body and superficial transverse perineal muscle and extends from the vagina to the anus.[155][156] Eisiotomies can be painful after delivery. Women often report pain during sexual intercourse up to three months after laceration repair or an episiotomy.[151][152] Some surgical techniques result in less pain than others.[151] The two types of episiotomies performed are the medial incision and the medio-lateral incision. The median incision is a perpendicular cut between the vagina and the anus and is the most common.[17][157] The medio-lateral incision is made between the vagina at an angle and is not as likely to tear through to the anus. The medio-lateral cut takes more time to heal than the median cut.[17] Vaginectomy is surgery to remove all or part of the vagina, and is usually used as a treatment for vaginal cancer.[153] The vulva or vagina may be altered in the case of gynecologic cancers (such as cervical cancer, vaginal cancer or vulvar cancer). Removal of some or all of the reproductive organs and genitalia can result in damage to the nerves and leave behind scarring or adhesions.[158] Sexual function may also be impaired as a result, as in the case of some cervical cancer surgeries, which impact vaginal lubrication, elasticity, pain, and sexual arousal. This mostly resolves after one year but remedying vaginal dryness and decreased sexual satisfaction may take longer.[158] Women, especially those who have given birth multiple times, may also under go a vaginal tightening or vaginal rejuvenation procedure. Women who have given birth multiple times can experience vaginal laxity as they age.[159] While a woman may experience an improvement in self-image and sexual pleasure by undergoing vaginal tightening or vaginal rejuvenation,[159] there are also risks associated with the procedures, including infection, narrowing of the vaginal opening, insufficient tightening, decreased sexual function (such as pain during sexual intercourse), and rectovaginal fistula.[160] Often, women who undergo this procedure unknowingly have a medical issue, such as a prolapse, and an attempt to correct this is also made during the surgery.[160] Vaginal evisceration is a serious complication of a vaginal hysterectomy and occurs when the vaginal cuff dehiscences (opens up) to allow the small intestine to protrude thorough and out the vagina.[161][162] Surgery can also be for cosmetic reasons. There are two main categories of women seeking cosmetic genital surgery: those with congenital conditions (such as an intersex condition), and those with no underlying condition who experience physical discomfort or wish to alter the appearance of their genitals because they believe they do not fall within a normal range.[163] A number of sex reassignment surgeries are available to transgender people. These are also available to remedy intersex conditions.[164] Anomalies and other health issues There can be a vaginal obstruction, such as one caused by agenesis, an imperforate hymen or, less commonly, a transverse vaginal septum. These cases require differentiation because surgery to correct them differs significantly.[165] When there is a lump obstructing the vaginal opening, it is likely a Bartholin's cyst.[166] Pelvic organ prolapse is characterized by descent of pelvic organs from their normal positions and their movement into the vagina. It usually occurs when the pelvic floor weakens or becomes injured after hysterectomy, gynecological cancer treatment, childbirth or heavy lifting.[167][168] Pelvic floor exercises such as Kegel exercises can be used to strengthen the pelvic floor muscles.[169] This may help to prevent or stop the progression of prolapse.[66] Vaginal weightlifting, which uses devices such as weighted vaginal cones, has been presented as an alternative to Kegel exercises to prevent incontinence, but evidence for its effectiveness is lacking.[170]

Society and culture See also: Vulva § Society and culture Perceptions, symbolism and vulgarity See also: Eurotophobia Various perceptions of the vagina have existed throughout history, including the belief it is the center of sexual desire, a metaphor for life via birth, inferior to the penis, unappealing to sight or smell, or vulgar.[171][172][173] These views can largely be attributed to sex differences, and how they are interpreted. David Buss, an evolutionary psychologist, stated that because a penis is significantly larger than a clitoris and it is readily visible while the vagina is not, and males urinate through the penis, boys are taught from childhood to touch their penises while girls are often taught that they should not touch their own genitalia, which implies that there is harm in doing so. Buss attributed this to the reason why many women are not as familiar with their genitalia, and that researchers assume these sex differences explain why boys learn to masturbate before girls and do so more often.[174] The word vagina is commonly avoided in conversation,[175] and many people are confused about the vagina's anatomy, including that it is not used for urination.[176][177][178] This is exacerbated by phrases such as "boys have a penis, girls have a vagina", which causes children to think that girls have one orifice in the pelvic area.[177] Author Hilda Hutcherson stated, "Because many [women] have been conditioned since childhood through verbal and nonverbal cues to think of [their] genitals as ugly, smelly and unclean, [they] aren't able to fully enjoy intimate encounters" because of fear that their partner will dislike the sight, smell, or taste of their genitals. She argued that women, unlike men, did not have locker room experiences in school where they compared each other's genitals, which is one reason so many women wonder if their genitals are normal.[172] Scholar Catherine Blackledge stated that having a vagina meant she would typically be treated less well than her vagina-less counterparts and subject to inequalities (such as job inequality), which she categorized as being treated like a second-class citizen.[175] The vagina represents a powerful symbol as the yoni in Hinduism. Pictured is a stone yoni found in Cát Tiên sanctuary, Lam Dong, Vietnam. Negative views of the vagina are simultaneously contrasted by views that it is a powerful symbol of female sexuality, spirituality, or life. Author Denise Linn stated that the vagina "is a powerful symbol of womanliness, openness, acceptance, and receptivity. It is the inner valley spirit."[179] Sigmund Freud placed significant value on the vagina,[180] postulating the concept that vaginal orgasm is separate from clitoral orgasm, and that, upon reaching puberty, the proper response of mature women is a changeover to vaginal orgasms (meaning orgasms without any clitoral stimulation). This theory made many women feel inadequate, as the majority of women cannot achieve orgasm via vaginal intercourse alone.[181][182][183] Regarding religion, the vagina represents a powerful symbol as the yoni in Hinduism, and this may indicate the value that Hindu society has given female sexuality and the vagina's ability to birth life.[184] While, in ancient times, the vagina was often considered equivalent (homologous) to the penis, with anatomists Galen (129 AD – 200 AD) and Vesalius (1514–1564) regarding the organs as structurally the same except for the vagina being inverted, anatomical studies over latter centuries showed the clitoris to be the penile equivalent.[69][185] Another perception of the vagina was that the release of vaginal fluids would cure or remedy a number of ailments; various methods were used over the centuries to release "female seed" (via vaginal lubrication or female ejaculation) as a treatment for suffocation ex semine retento (suffocation of the womb), green sickness, and possibly for female hysteria. Reported methods for treatment included a midwife rubbing the walls of the vagina or insertion of the penis or penis-shaped objects into the vagina. Symptoms of the female hysteria diagnosis  – a concept that is no longer recognized by medical authorities as a medical disorder  – included faintness, nervousness, insomnia, fluid retention, heaviness in abdomen, muscle spasm, shortness of breath, irritability, loss of appetite for food or sex, and a propensity for causing trouble.[186] It may be that women who were considered suffering from female hysteria condition would sometimes undergo "pelvic massage"  – stimulation of the genitals by the doctor until the woman experienced "hysterical paroxysm" (i.e., orgasm). In this case, paroxysm was regarded as a medical treatment, and not a sexual release.[186] The vagina and vulva have been given many vulgar names, three of which are cunt, twat, and pussy. Cunt is also used as a derogatory epithet referring to people of either sex. This usage is relatively recent, dating from the late nineteenth century.[187] Reflecting different national usages, cunt is described as "an unpleasant or stupid person" in the Compact Oxford English Dictionary,[188] whereas Merriam-Webster has a usage of the term as "usually disparaging and obscene: woman,"[189] noting that it is used in the U.S. as "an offensive way to refer to a woman."[190] Random House defines it as "a despicable, contemptible or foolish man."[187] Some feminists of the 1970s sought to eliminate disparaging terms such as cunt.[191] Twat is widely used as a derogatory epithet, especially in British English, referring to a person considered obnoxious or stupid.[192][193] Pussy can indicate "cowardice or weakness", and "the human vulva or vagina" or by extension "sexual intercourse with a woman".[194] In contemporary English, use of the word pussy to refer to women is considered derogatory or demeaning, treating people as sexual objects.[195] In contemporary literature and art Main article: Vagina and vulva in art The vagina loquens, or "talking vagina", is a significant tradition in literature and art, dating back to the ancient folklore motifs of the "talking cunt".[196][197] These tales usually involve vaginas talking due to the effect of magic or charms, and often admitting to their lack of chastity.[196] Other folk tales relate the vagina as having teeth – "vagina dentata" (Latin for "toothed vagina"). These carry the implication that sexual intercourse might result in injury, emasculation, or castration for the man involved. These stories were frequently told as cautionary tales warning of the dangers of unknown women and to discourage rape.[198] In 1966, the French artist Niki de Saint Phalle collaborated with Dadaist artist Jean Tinguely and Per Olof Ultvedt on a large sculpture installation entitled "hon-en katedral" (also spelled "Hon-en-Katedrall", which means "she-a cathedral") for Moderna Museet, in Stockholm, Sweden. The outer form is a giant, reclining sculpture of a woman with her legs spread. Museum patrons can go inside her body by entering a door-sized vaginal opening.[199] Sainte Phalle stated that the sculpture represented a fertility goddess who was able to receive visitors into her body and then "give birth" to them again.[200] The Vagina Monologues, a 1996 episodic play by Eve Ensler, has contributed to making female sexuality a topic of public discourse. It is made up of a varying number of monologues read by a number of women. Initially, Ensler performed every monologue herself, with subsequent performances featuring three actresses; latter versions feature a different actress for every role. Each of the monologues deals with an aspect of the feminine experience, touching on matters such as sexual activity, love, rape, menstruation, female genital mutilation, masturbation, birth, orgasm, the various common names for the vagina, or simply as a physical aspect of the body. A recurring theme throughout the pieces is the vagina as a tool of female empowerment, and the ultimate embodiment of individuality.[201][202] In October 2013, artist Peter Reynosa created a "... red and white acrylic painting [that] depicts [pop singer] Madonna painted in the shape of a defiant yonic symbol that looks like a vagina or vulva."[203] Influence on modification See also: Genital modification and mutilation Societal views, influenced by tradition, a lack of knowledge on anatomy, or sexism, can significantly impact a person's decision to alter their own or another person's genitalia.[160][204] Women may want to alter their genitalia (vagina or vulva) because they believe that its appearance, such as the length of the labia minora covering the vaginal opening, is not normal, or because they desire a smaller vaginal opening or tighter vagina. Women may want to remain youthful in appearance and sexual function. These views are often influenced by the media,[160][205] including pornography,[205] and women can have low self-esteem as a result.[160] They may be embarrassed to be naked in front of a sexual partner and may insist on having sex with the lights off.[160] When modification surgery is performed purely for cosmetic reasons, it is often viewed poorly,[160] and some doctors have compared such surgeries to female genital mutilation.[205] Female genital mutilation (FGM), also known as female circumcision or female genital cutting, is another aspect of genital modification and has no known health benefits.[206][207] The most severe form is Type III FGM, which is infibulation and involves removing all or part of the labia and the vagina being closed up. A small hole is left for the passage of urine and menstrual blood, and the vagina is opened up for sexual intercourse and childbirth.[207] Significant controversy surrounds female genital mutilation,[206][207] with the World Health Organization (WHO) and other health organizations campaigning against the procedures on behalf of human rights, stating that it is "a violation of the human rights of girls and women" and "reflects deep-rooted inequality between the sexes".[207] Female genital mutilation has existed at one point or another in almost all human civilizations,[208] most commonly to exert control over the sexual behavior, including masturbation, of girls and women.[207][208] It is carried out in several countries, especially in Africa, and to a lesser extent in other parts of the Middle East and Southeast Asia, on girls from a few days old to mid-adolescent, often to reduce sexual desire in an effort to preserve vaginal virginity.[206][207][208] Comfort Momoh stated it may be that female genital mutilation was "practiced in ancient Egypt as a sign of distinction among the aristocracy"; there are reports that traces of infibulation are on Egyptian mummies.[208] Custom and tradition are the most frequently cited reasons for the practice of female genital mutilation. Some cultures believe that female genital mutilation is part of a girl's initiation into adulthood and that not performing it can disrupt social and political cohesion.[207][208] In these societies, a girl is often not considered an adult unless she has undergone the procedure.[207]

Other animals See also: Sex organs § Mammals, and Reproductive system The vagina is a feature of animals in which the female is internally fertilized, rather than by traumatic insemination used by some invertebrates. The shape of the vagina varies among different animals. In placental mammals and marsupials, the vagina leads from the uterus to the exterior of the female body. Female marsupials have two lateral vaginas, which lead to separate uteri, but both open externally through the same orifice.[209] The female spotted hyena does not have an external vagina. Instead, the vagina exits through the clitoris, allowing the females to urinate, copulate and give birth through the clitoris.[210] The female vagina of the coyote contracts during copulation, forming a copulatory tie.[211] Cows have many of the same vaginal structures as humans.[212] In the case of other animals, birds, monotremes, and some reptiles have a part of the oviduct that leads to the cloaca.[213][214] Chickens have a vaginal aperture that opens from the vertical apex of the cloaca. The vagina extends upward from the aperture and becomes the egg gland.[214] In some jawless fish, there is neither oviduct nor vagina and instead the egg travels directly through the body cavity (and is fertilised externally as in most fish and amphibians). In insects and other invertebrates, the vagina can be a part of the oviduct (see insect reproductive system).[215] Birds have a cloaca into which the urinary, reproductive tract (vagina) and gastrointestinal tract empty-the external orifice a is called the vent.[216] Females of some waterfowl species have developed vaginal structures called dead end sacs and clockwise coils to protect themselves from sexual coercion.[217] In 2014, the scientific journal Current Biology reported that four species of Brazilian insects in the genus Neotrogla were found to have sex-reversed genitalia. The male insects of those species have vagina-like openings, while the females have penis-like organs.[218][219][220] Because humans and non-human primates share physiological characteristics as a result of evolution, non-human primates are optimal models for human biomedical research.[221] Macaques are used for studying HIV transmission and testing microbicides. They have a similar ovarian cycle length, including over the course of the lifespan, and menstruate. As with women, estrogens and progestogens in the Macaques happen with the menstrual cycle and during premenarche and postmenopause, but, unlike with women, keratinization of the epithelium occurs during the follicular phase.[221] The vaginal pH of Macaques also differs, with near-neutral to slightly alkaline median values and is widely variable, which may be due to its lack of lactobacilli in the vaginal flora.[221] With regard to sexually transmitted infections, such as trichomoniasis, animal models have been scarcely used. This is because the causes are significantly more human-related.[222]

See also Artificial vagina Gynoecium Vaginal photoplethysmograph Vaginal steaming Uterine inversion

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Major Patterns in Vertebrate Evolution. Springer Science & Business Media. pp. 439–516. ISBN 1468488511.  ^ Szykman M, Van Horn RC, Engh AL, Boydston EE, Holekamp KE (2007). "Courtship and mating in free-living spotted hyenas" (PDF). Behaviour. 144 (7): 815–846. doi:10.1163/156853907781476418.  ^ Bekoff M, Diamond J (May 1976). "Precopulatory and Copulatory Behavior in Coyotes". Journal of Mammalogy. American Society of Mammalogists. 57 (2): 372–375. doi:10.2307/1379696. JSTOR 1379696.  ^ Schatten H, Constantinescu GM (2008). Comparative Reproductive Biology. John Wiley & Sons. p. 15. ISBN 9780470390252.  ^ Iannaccone P (1997). Biological Aspects of Disease. CRC Press. pp. 315–316. ISBN 3718606135.  ^ a b Fishbeck DW, Sebastiani A (2012). Comparative Anatomy: Manual of Vertebrate Dissection. Morton Publishing Company. pp. 66–68. ISBN 1617310042.  ^ Chapman RF, Simpson SJ, Douglas AE (2013). The Insects: Structure and Function. Cambridge University Press. pp. 314–316. ISBN 052111389X.  ^ "What Is a Bird's Cloaca?". The Spruce. Retrieved 2018-01-13.  ^ Brennan, P. L. R., Clark, C. J. & Prum, R. O. Explosive eversion and functional morphology of the duck penis supports sexual conflict in waterfowl genitalia. Proceedings: Biological Sciences 277, 1309–14 (2010). ^ Arielle Duhaime-Ross (April 17, 2014). "Scientists discover the animal kingdom's first 'female penis’". The Verge. Retrieved March 29, 2015. ^ Yoshizawae K, Ferreira RL, Kamimura Y, Lienhard C (April 17, 2014). "Female Penis, Male Vagina, and Their Correlated Evolution in a Cave Insect". Current Biology. 24 (9): 1006–1010. doi:10.1016/j.cub.2014.03.022. PMID 24746797.  ^ "In sex-reversed cave insects, females have the penises". Science Daily. April 17, 2014. Retrieved April 27, 2014.  ^ a b c Sarmento B (2015). Vitro Culture Models. Woodhead Publishing. p. 296. ISBN 0081001142.  ^ Kumar B, Gupta S (2014). Sexually Transmitted Infections - E-book. Elsevier Health Sciences. p. 1286. 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External links Media related to Vaginas at Wikimedia Commons The dictionary definition of vagina at Wiktionary v t e Outline of human sexuality Physiology and biology Erection Insemination Intersex Libido Orgasm Female and male ejaculation Pre-ejaculate Pregnancy Sexual arousal Health and education Birth control Condom Masters and Johnson Reproductive medicine Andrology Gynaecology Urology Safe sex Sex education Sex therapy Sexology Sexual dysfunction Erectile dysfunction Hypersexuality Hyposexuality Sexual medicine Sexual surrogate Sexually transmitted infection Identity and diversity Gender binary Gender identity Men who have sex with men Sexual identity Sexual orientation Women who have sex with women Law Age of consent Criminal transmission of HIV Child sexual abuse Incest Indecent exposure Obscenity Sexual abuse Rape Sexual assault Sexual harassment Sexual misconduct Sexual violence History Blue Movie Counterculture of the 1960s Feminist sex wars Golden Age of Porn History of 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Endometrium epithelium Myometrium Perimetrium Parametrium Ligaments Round ligament Broad ligament Cardinal ligament Uterosacral ligament Pubocervical ligament General Uterine glands Vagina Fossa of vestibule of vagina Vaginal fornix Hymen External Vulva Labia Mons pubis Labia majora Anterior commissure Posterior commissure Pudendal cleft Labia minora Frenulum of labia minora Frenulum of clitoris Vulval vestibule Interlabial sulci Bulb of vestibule Vaginal orifice vestibular glands/ducts Bartholin's glands/Bartholin's ducts Skene's glands/Skene's ducts Clitoris Crus of clitoris Corpus cavernosum Clitoral glans Hood Urethra Urethral crest Other G-spot Urethral sponge Perineal sponge v t e Human regional anatomy Head Ear Face Cheek Chin Eye Mouth Nose Forehead Jaw Occiput Scalp Temple Neck Adam's apple Throat Trunk Abdomen Waist Midriff Navel Back Thorax Breast Pelvis Sex organs Limbs Arm Shoulder Axilla Brachium Elbow Forearm Wrist Hand Finger Thumb Index Middle Ring Little Leg Buttocks Hip Thigh Knee Calf Foot Ankle Heel Sole Toe Other Écorché General anatomy: systems and organs, regional anatomy, planes and lines, superficial axial anatomy, superficial anatomy of limbs v t e Female genital surgical and other procedures (gynecological surgery) (ICD-9-CM V3 65–71, ICD-10-PCS 0U) Adnexa Ovaries Oophorectomy Salpingoophorectomy Fallopian tubes Falloposcopy Salpingectomy Tubal ligation Essure Tubal reversal Uterus general: Genitoplasty Hysterectomy Hysterotomy Pelvic exenteration Uterine artery embolization Transplantation uterine cavity: Hysteroscopy Vacuum aspiration endometrium: Endometrial biopsy Endometrial ablation myometrium: Uterine myomectomy cervix: Colposcopy Cervical conization LEEP Cervical cerclage Cervical screening (pap test) Cervicectomy Vagina Vaginectomy Culdoscopy Culdocentesis Episiotomy Husband stitch Hymenotomy Colpocleisis Hymenorrhaphy Vaginal wet mount Vaginal transplantation Vulva Vulvectomy Female genital mutilation Labiaplasty Clitoral hood 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This Article Is Semi-protected.VulvaVagina (disambiguation)VulvaPubic HairLabiaClitorisLabia MinoraUrethraPerineumAnusEmbryologyUrogenital SinusParamesonephric DuctArteryUterine ArteryVaginal ArteryVeinVaginal VeinNerveLymphInternal Iliac Lymph NodesSuperficial Inguinal Lymph NodesLatinMedical Subject HeadingsElsevierTerminologia AnatomicaFoundational Model Of AnatomyAnatomical TerminologyMammalFemale Genital TractVulvaCervixHymenUterusSexual IntercourseChildbirthMenstruationMenstrual CycleUrethralUrinary TractGenital TractUrinary MeatusUrinationReproductionLabiaAmphibianBirdReptileMonotremeCloacaSexual ActivitySexual ArousalVaginal LubricationPenisEjaculationFertilizationHeterosexualLesbianSexually Transmitted DiseaseSafe SexVulvaTabooFemale SexualityColloquialismLatinScabbardPregnancyChildbirthColloquialismVulvaHymenCervixLabiaEnlargeVaginal FornixUrogenital TrianglePerineumSexually ArousedRectumRecto-uterine PouchPerineumLumen (anatomy)Vaginal FornicesLevator AniCardinal 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ArteryInternal Iliac ArteryUterine ArteryAnastamosisVaginal Branches Of Uterine ArteryMiddle Rectal ArteryInternal Pudendal ArteryLymphatic VesselInguinal Lymph NodeVaginal Venous PlexusUterine Venous PlexusVesical Venous PlexusRectal Venous PlexusInternal Iliac VeinSympathetic Nervous SystemParasympathetic Nervous SystemInferior Hypogastric PlexusPudendal NerveVaginal DischargeVaginal LubricationUterusVaginal LubricationBartholin's GlandMenstruationPregnancyEndometriumMenstrual CycleFemale Reproductive SystemOvaryFeminine HygieneTamponMenstrual CupSanitary NapkinMucusTransudateVasocongestionCapillaryOvulationAlkalinityFertileSpermHuman Sexual ActivityHuman Female SexualityOrgasmHuman PenisMasturbationFingering (sexual Act)Oral SexCunnilingusSex PositionMissionary PositionSpoons Sex PositionForeplayBirth ControlLesbianWomen Who Have Sex With WomenLesbian Sexual PracticesSex ToysVibrator (sex Toy)DildoKegel ExercisesVaginal TighteningKama SutraHinduVātsyāyanaClitorisVaginal 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ExaminationPelvic ExaminationPap TestSymmetryCavity SearchVaginal DiseaseSafe SexVaginitisSexually Transmitted InfectionCancerBacteriocinsHydrogen PeroxideBacterial VaginosisTrichomoniasisVaginismusConditioned ReflexHIV/AIDSHuman PapillomavirusGenital HerpesSafe SexCondomFemale CondomChlamydia TrachomatisNeisseria GonorrhoeaeCancerRadiation TherapyVaginal CancerVulvar CancerCervical CancerHPV VaccineDyspareuniaVaginal BleedingAsymptomaticEndometrial CancerLeukorrheaHormone Replacement Therapy (menopause)Atrophic VaginitisVaginal DrynessHot FlashCollagenFemringPersonal LubricantMasters And JohnsonDiastasis (pathology)Pubococcygeus MuscleEpisiotomyBleb (medicine)Stress Urinary IncontinenceRectoceleCystoceleUterine ProlapseHuman AnusFecal IncontinenceSpontaneous Vaginal BirthSuturingVaginectomyVaginoplastyLabiaplastyUrogynecologistAdhesion (medicine)Vaginal TighteningSelf-imageDyspareuniaRectovaginal FistulaVaginal EviscerationVaginal HysterectomyVaginal CuffWound DehiscenceSmall IntestineCongenitalIntersexSex Reassignment SurgeryTransgenderAgenesisImperforate HymenTransverse Vaginal SeptumBartholin's CystPelvic Organ ProlapsePelvic FloorKegel ExerciseVaginal WeightliftingVaginal ConeVulvaEurotophobiaSexual DesireVulgarismSex Differences In HumansDavid BussEvolutionary PsychologistJob InequalityEnlargeYoniHinduismSigmund FreudYoniHinduismHomology (biology)GalenAndreas VesaliusGreen SicknessFemale HysteriaMidwifeCuntTwatPussyDerogatoryEpithetList Of Dialects Of The English LanguageCompact Oxford English Dictionary Of Current EnglishMerriam-WebsterRandom HouseFeministBritish EnglishCowardiceWeaknessVagina And Vulva In ArtVagina LoquensFolkloreMotif (folkloristics)ChastityVagina DentataLatinEmasculationCastrationCautionary TaleRapeNiki De Saint PhalleDadaistJean TinguelyStockholmFertility GoddessThe Vagina MonologuesEve EnslerFemininityMadonna (singer)YoniGenital Modification And MutilationSexismPornographyFemale Genital MutilationInfibulationLabiaWorld Health 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