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Caption = A woman's clitoris extends from the visible portion to a point below the pubic bone. |
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Caption = The internal anatomy of the human [[vulva]], with the clitoral hood and labia minora indicated as lines. The clitoris extends from the visible portion to a point below the pubic bone. |
 
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Caption2 = Structures of the female genitalia, with the tip of the clitoris visible above the [[labia minora]]. The [[pubic hair]] upon the [[labia majora]] has been removed.|
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Precursor = [[Genital tubercle]] |
 
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Artery = [[Dorsal artery of clitoris]] |
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Artery = [[dorsal artery of clitoris]], [[deep artery of clitoris]] |
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Vein = [[superficial dorsal veins of clitoris]], [[deep dorsal vein of clitoris]] |
Nerve = [[Dorsal nerve of clitoris]] |
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Nerve = [[dorsal nerve of clitoris]] |
 
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MeshName = Clitoris |
 
MeshName = Clitoris |
 
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The '''clitoris''' ([[Greek language|Greek]] ''{{polytonic|κλειτορίς}}'') is a female [[sex organ|sexual organ]]. In humans, the visible knob-like portion is located near the [[anterior]] junction of the [[labia minora]], above the opening of the [[vagina]]. Unlike the [[Homology (biology)|homologous]] male organ (the [[penis]]), the clitoris does not contain the [[distal]] portion of the [[urethra]] and functions solely to induce [[sexual pleasure]]. The only known exception to this is in the [[Crocuta|Spotted Hyena]], where the [[urogenital system]] is modified so that the female urinates, mates and gives birth via an enlarged, [[erect]]ile clitoris, known as a [[pseudo-penis]].
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The '''clitoris''' is a [[sex organ|sexual organ]] that is present only in [[female]] [[mammal]]s. In humans, the visible button-like portion is located near the [[anterior]] junction of the [[labia minora]], above the opening of the [[urethra]] and [[vagina]]. Unlike the [[penis]], which is [[Homology (biology)|homologous]] to the clitoris, the clitoris does not contain the [[distal]] portion of the [[urethra]], and functions solely to induce [[sexual pleasure]]. The only known exception to this is in the [[Spotted Hyena]]. In this species, the [[urogenital system]] is unique in that the female urinates, mates and gives birth via an enlarged, [[erect]]ile clitoris, known as a [[pseudo-penis]].<ref>{{cite journal|author=Laurence S. Baskina, Selcuk Yucelae, Gerald R. Cunhab, Stephen E. Glickmancd, Ned J. Placec|title=A Neuroanatomical Comparison of Humans and Spotted Hyena, a Natural Animal Model for Common Urogenital Sinus: Clinical Reflections on Feminizing Genitoplasty|journal=Journal of Urology|volume=175|issue=1|pages=276–283|month=January | year=2006|doi=10.1016/S0022-5347(05)00014-5}}</ref>
   
==Pronunciation ==
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==Pronunciation and etymology==
The word is pronunced: KLIHT uh rihs ({{IPA|['klɪtəɹəs]}} in [[International Phonetic Alphabet|IPA]] notation {{noprint|([[media:Clitoris pronunciation 1.ogg|listen]]}})) or klih TOHR ihs ({{IPA|[klɪ't&#596;ɹəs]}} {{noprint|([[media:Clitoris pronunciation 2.ogg|listen]]}})). The plural forms are ''clitorises'' in English and ''clitorides'' in Latin. In slang, it is sometimes abbreviated as ''clit''. The ''[[Oxford English Dictionary|OED]]'' suggests that the pronunciation KLY tor ihs ({{IPA|['klaɪtɒɹɪs]}}) is also used in the [[United Kingdom|UK]], and gives the likely etymology as coming from the Greek ''{{polytonic|κλειτορἰς}}'', perhaps derived from the verb ''{{polytonic|κλεἰ-ειν}}'', to shut.
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The word is {{pronEng|ˈklɪtɒr<s>ɪ</s>s}} {{noprint|([[media:Clitoris pronunciation 1.ogg|listen]]}}) or {{IPA|/kl<s>ɪ</s>ˈtɔər<s>ɪ</s>s/}} {{noprint|([[media:Clitoris pronunciation 2.ogg|listen]]}}). The plural forms are ''clitorises'' in English and ''clitorides'' in Latin. In slang, it is sometimes abbreviated as ''clit'', which originated in the 1950s. The ''[[Oxford English Dictionary|OED]]'' suggests that the pronunciation {{IPA|/ˈklaɪtɒr<s>ɪ</s>s/}}) is also used in the [[United Kingdom|UK]], and gives the likely etymology as coming from the Greek ''{{polytonic|κλειτορἰς}}'', perhaps derived from the verb ''{{polytonic|κλεἰ-ειν}}'', to shut. The [[Online Etymology Dictionary]] maintains that the etymology of this diminutive is still uncertain noting that many sources take kleitoris “{{polytonic|Κλειτορίδ}}” literally from the Greek "little hill”. Other etymological candidates are key or latch, to touch or titillate lasciviously, to tickle, to be inclined (toward pleasure) and slope, from the same root as climax. It has been noted in German as ''der Kitzler'' meaning "the tickler". Its Latin [[genitive]] is ''clitoridis'', as in "[[Clitoral glans|glans clitoridis]]".
   
==Development and formation==
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== Form ==
<!-- These images have been the subject of much controversy. Change or remove them at your own risk.-->
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The head or glans of the clitoris is roughly the size and shape of a [[pea]], although it can be significantly larger or smaller. The clitoral glans is highly sensitive, containing as many nerve endings as the analogous organ in males, the [[glans penis]], making it particularly well-suited for [[sexual stimulation]].
[[Image:Clitoris_inner_anatomy.gif|thumb|220px|The internal anatomy of the human [[vulva]], with the clitoral hood and labia minora indicated as lines.]]
 
[[Image:sarahvulva.jpg|thumb|220px|Photograph of a human vulva showing the glans clitoris. In many cases the clitoral hood completely covers the glans, as seen in the photo below.]]
 
[[Image:HumanVulva-NewText-PhiloViv.jpg|thumb|220px|A photograph of a human vulva, with the clitoris obscured by the clitoral hood and folds of the labia minora.]]
 
The female clitoris corresponds to homologous parts of the male penis, i.e., [[embryology|embryologically]] it comes from the same tissue that forms the penis. The [[induction (biology)|trigger]] for forming a penis instead of a clitoris is the action of [[testosterone]] ''[[in utero]]'' (see [[clitoromegaly]]).
 
   
The organ is formed out of [[corpus cavernosum]], a rich collection of [[capillary]] tissue with a substantial presence of [[nerve tissue]]. It contains roughly the same number of [[nerve ending]]s as the penis,<ref>Gardos, Sandor, ''Nerve Endings in Penis & Clitoris'', [http://www.mypleasure.com/education/qanda/questions/1093.asp], last accessed 10 October 2006</ref> and it is particularly well-suited for [[sexual stimulation]].
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[[Image:Edsim clitoral glans innervation.jpg|thumb|left|[http://www.ed-sim.com/clitoral_innervation Click here to see a video showing clitoral innervation]]]
   
The visible portions of the clitoris extend from the front [[commissure]]-where the edges of the outer lips ([[labia majora]]) meet at the base of the pubic mound-to the [[fourchette]], and include the glans, hood, and inner lips ([[labia minora]]).<ref>{{cite book |last=Chalker |first=Rebecca |date=2000 |title=The Clitoral Truth |url=http://www.sevenstories.com/Book/index.cfm?GCOI=58322100427350 |publisher=Seven Seas Press |pages=36 |id=ISBN 1-58322-473-4}}</ref> The [[labia majora]] are not considered a part of the clitoris. The ''[[clitoral glans]]'' is entirely or partially covered by the ''[[clitoral hood]]'' or ''[[prepuce]]'', tissue that is homologous to the [[foreskin]] in males. In humans, the [[clitoral body]] then extends several [[centimetre|centimeters]] upwards and to the back, before splitting into two arms, the ''[[clitoral crura]]''. Shaped like an inverted "V", these crura extend around and to the interior of the [[labia majora]]. Including external and internal components, it is thought the clitoris is similar in size to the penis.
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{{Infobox Anatomy |
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Name = Human vulva |
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Latin = |
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Image = Vulva_labeled_no_tags.jpg |
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Caption = Human vulva showing externally-visible features of the clitoris in relation to other components: 1. Clitoral hood (prepuce); 2. Clitoral glans; 3. Urethral orifice; 4. Vulval vestibule; 5. Labia minora; 6. Vaginal opening; 7. Labia majora (hair removed); 8. Perineum |
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Width = 180 |
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MeshName = Vulva |
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MeshNumber = A05.360.319.887 |
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Dorlands = nine/000116925 |
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DorlandsID = vulva
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}}
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The clitoris is a complex structure that includes external and internal components. Projecting at the front of the vaginal [[commissure]] where the edges of the outer lips ([[labia majora]]) meet at the base of the pubic mound is the [[clitoral hood]] ([[prepuce]]), which in full or part covers the head ([[clitoral glans]]) -- commonly about the size and shape of a shirt-button. Following from the head back and up along the shaft, it is found that this extends up to several centimeters before reversing direction, branched resulting in a shaped like an inverted "V", and extending as a pair of "legs" known as the [[clitoral crura]] formed of the [[corpora cavernosa]], which are concealed behind the [[labia minora]], and terminating attached to the pubic arch, according to some,<ref>[http://www.medicalook.com/human_anatomy/organs/Vulva.html Vulva - MedicaLook Human Anatomy<!-- Bot generated title -->]</ref> or following interior to the labia minora to meet at the [[frenulum labiorum pudendi|fourchette]], according to others.<ref name="Chalker"/>
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Associated are the [[urethral sponge]], clitoral/[[vestibular bulbs]], [[perineal sponge]], a network of nerves and blood vessels, suspensory ligaments, muscles and pelvic diaphragm.<ref name="Francoeur"/>
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There is considerable variation in how much of the clitoris protrudes from the hood and how much is covered by it, ranging from complete, covered invisibility to full, protruding visibility. An article published in the Journal of Obstetrics and Gynecology in July 1992 states that the average width of the clitoral glans lies within the range of 2.5 – 4.5 mm (0.10-0.18 in), indicating that the average size is smaller than a pencil eraser. There is no identified correlation between the size of a clitoris and a woman's age, height, weight, use of oral contraceptives, or being post-menopausal. Those who have given birth tend to have slightly larger measurements.{{Fact |date=August 2008}}
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[[Image:Edsim Vascular.jpg|thumb|left|[http://www.ed-sim.com/clitoral_vascularization Click here to see a video showing clitoris becoming engorged with blood]]]
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[[Masters and Johnson]] were the first to determine that the clitoral structures surround and extend along the vagina, determining that all [[orgasms]] are of clitoral origin.<ref>{{cite book |last=Federation of Feminist Women’s Health Centers |year=1991 |title=A New View of a Woman’s Body |publisher= Feminist Heath Press |pages=46 |isbn=0-929945-0-2}}</ref> More recently, Australian urologist Dr. Helen O'Connell, using MRI technology, noted a direct relationship between the legs or roots of the clitoris and the [[erectile tissue]] of the clitoral bulbs and corpora, and the distal urethra and vagina.<ref name=oconnell>{{cite journal
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| authorlink = O'Connell, et al
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| title = Anatomy of the Clitoris
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| journal = The Journal of Urology
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| volume = 174
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| pages = 1189 –1195
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| month = October | year = 2005}}</ref> She asserts that this interconnected relationship is the physiological explanation for the conjectured [[G-spot]] and experience of [[vaginal orgasm]] taking into account the stimulation of the internal parts of the clitoris during vaginal penetration.<ref>Mascall, Sharon, “Time for Rethink on the Clitoris”, BBC News. 2006 June |url=http://news.bbc.co.uk/1/hi/health/5013866.stm</ref> Some individuals who experience orgasm from both direct clitoral stimulation of the glans and vaginal access to the internal bodies may distinguish between them in terms of both the physical and general sensations associated with each.
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During [[sexual arousal]] and during orgasm, the clitoris and the whole of the genitalia engorge and change color as these erectile tissues fill with [[blood]], and the individual experiences vaginal contractions. Masters and Johnson documented the [[sexual response cycle]], which has four phases and is still the clinically accepted definition of the human orgasm. More recent research has determined that some can experience a sustained intense orgasm through stimulation of the clitoris and remain in the orgasmic phase for much longer than the original studies indicated, evidenced by genital engorgement, color changes, and vaginal contractions.<ref>{{cite book |last=Bodansky |first=Vera and Steve|year=2002 |title=The Illustrated Guide to Extended Massive Orgasm |publisher= Hunter House |isbn=0897933621}}</ref>
   
Most of the clitoris is hidden, and external stimulation of the entire clitoris can result in a more profound sexual response. There is considerable variation among women with regard to how much of the clitoris protrudes from the hood and how much is covered by it, ranging from complete, covered invisibility to full, protruding visibility. Additionally, the size of the external clitoral shaft varies greatly; it may be smaller than a pencil eraser, or larger than a grape. Recently, urologist Dr. Helen O'Connell discovered that erectile tissue lies beneath the external glans, splitting off into two 11 cm "legs", with more tissue branching down near the vaginal opening.<ref>O'Connell, Helen, ''Anatomy of the Clitoris'', J Urol. 2005 Oct;174(4 Pt 1):1189-95, PMID 16145367</ref> One explanation advanced for the [[vaginal orgasm]] is that it results from stimulation of the internal parts of the clitoris during vaginal penetration. Nevertheless, some women experience both clitoral and vaginal orgasms and distinguish between them in terms of both the physical and general sensations associated with each, and the structure of the [[G-spot]], located inside the vagina, must also be taken into consideration.
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{{Sex organs}}
   
During sexual arousal, the clitoris enlarges as its [[erectile tissue]] fills with [[blood]]. Shortly before [[orgasm]], this erection often increases further, drawing the clitoris upwards, so that viewed from the outside it actually appears to shrink.
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==Development==
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At the time of [[development of the urinary and reproductive organs]] in [[embryogenesis]] the previously undifferentiated [[genital tubercle]] develops into the clitoris or the penis, along with all other major organ systems, making them [[homologous]].<ref name="Francoeur">{{cite book |last=Francoeur |first=Robert T. |year=2000 |title=The Complete Dictionary of Sexology |publisher=The Continuum Publishing Company |pages=180 |isbn=0-82640-672-6}}</ref> The clitoris is formed from the same tissues that would become the glans and upper shaft of a [[penis]] if the [[embryo]] had been exposed to “male” hormones. Changes in appearance of male and female embryos begin roughly eight weeks after conception. By birth, the genital structures have developed into the [[Female reproductive system (human)|female reproductive system]].<ref>{{cite book |last=Reinisch, Beasley |first=June and Ruth|year=1990 |title=The Kinsey Institute New Report on Sex |publisher= St. Martin’s Press |isbn=0312063865}}</ref>
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Embryo sex based on external genitalia is apparent to a doctor at the end of the 14th menstrual week, and the sex can usually be identified by an ultrasound after 16 to 18 menstrual weeks.<ref>{{cite book |last=Heffner |first=Linda|year=2001 |title=Human Reproduction at a Glance |publisher= Blackwell Sciences, Ltd |isbn=0632054611}}</ref> A condition that can develop from naturally occurring or deliberate exposure to higher than average levels of [[testosterone]] is [[clitoromegaly]] or macroclitoris, of which there are a few [http://images.heaven666.org/images/huge-clit.jpg extreme] [http://www.forplu.com/community/gals-like-us/clitoris.htm cases].
   
 
==Recognition of existence==
 
==Recognition of existence==
Medical literature first recognised the existence of the clitoris in the [[16th century]]. This is the subject of some dispute: [[Realdo Colombo]] (also known as Matteo Renaldo Colombo) was a [[lecturer]] in [[surgery]] at the [[University of Padua]], [[Italy]], and in [[1559]] he published a book called ''De re anatomica'' in which he described the "seat of woman's delight". Colombo concluded, "Since no one has discerned these projections and their workings, if it is permissible to give names to things discovered by me, it should be called the love or sweetness of [[Venus (mythology)|Venus]]."
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The clitoris has been rediscovered repeatedly over the centuries (Harvey 2001, Laqueur 1989). Over a period of more than 2,500 years, some have considered the clitoris and the penis equivalent in all respects except their arrangement.<ref name="Chalker">{{cite book |last=Chalker |first=Rebecca |year=2000 |title=The Clitoral Truth |url=http://www.sevenstories.com/Book/index.cfm?GCOI=58322100427350 |publisher=Seven Seas Press |pages=1 |isbn=1-58322-473-4}}</ref> Medical literature first recognized the existence of the clitoris in the 16th century{{Fact|date=June 2007}}. This is the subject of some dispute: [[Realdo Colombo]] (also known as Matteo Renaldo Colombo) was a lecturer in [[surgery]] at the [[University of Padua]], [[Italy]], and in 1559 he published a book called ''De re anatomica'' in which he described the "seat of woman's delight". Colombo concluded, "Since no one has discerned these projections and their workings, if it is permissible to give names to things discovered by me, it should be called the love or sweetness of [[Venus (mythology)|Venus]]."
   
Colombo's claim was disputed by his successor at [[University of Padua|Padua]], [[Gabriele Falloppio]] (who discovered the [[fallopian tube]]), who claimed that he was the first to discover the clitoris. [[Caspar Bartholin the Younger|Caspar Bartholin]], a [[17th century]] Danish [[anatomy|anatomist]], dismissed both claims, arguing that the clitoris had been widely known to [[medicine|medical science]] since the [[2nd century]]. It was also known to the Romans, who named it ''[[Latin profanity#Landica: the clitoris|landica]]''. Noted researchers [[Masters and Johnson]] conducted extensive studies of the clitoris.
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Colombo's claim was disputed by his successor at [[University of Padua|Padua]], [[Gabriele Falloppio]] (who discovered the [[fallopian tube]]), who claimed that he was the first to discover the clitoris. [[Caspar Bartholin the Younger|Caspar Bartholin]], a 17th century Danish [[anatomy|anatomist]], dismissed both claims, arguing that the clitoris had been widely known to [[medicine|medical science]] since the 2nd century. Indeed, [[Hippocrates]] used the term columella (''little pillar''). [[Avicenna]] named the clitoris the albatra or virga (''rod''). [[Albucasis]], an Arabic medical authority, named it tentigo (''tension''). It was also known to the Romans, who named it (vulgar slang) ''[[Latin profanity#Landica: the clitoris|landica]]''.<ref>{{cite book |title=The Latin Sexual Vocabulary |author=J.N. Adams |publisher=[[Johns Hopkins University Press]] |year=1982 |page=97-98}}</ref>
   
==Body modification==
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This cycle of suppression and discovery continued, notably in the work of [[De Graaf]] (''Tractatus de Virorum Organis Generationi Inservientibus, De Mulierum Organis Generationi Inservientibus Tractatus Novus'') in the 17th century and [[Kobelt]] (''Die männlichen und weiblichen Wollustorgane des Menschen und einiger Säugetiere'') in the 19th. De Graaf criticised Columbo's claims for this. (Harvey, Laqueur).
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The full extent of the clitoris was alluded to by Masters and Johnson in 1966, but in such a muddled fashion that the significance of their description became obscured. That same year, feminist psychiatrist [[Mary Jane Sherfey]] published an article on female sexuality that described in detail the extensive nature of the internal anatomy of the clitoris and in 1981, the Federation of Feminist Women's Health Clinics (FFWHC) continued this process with anatomically precise illustrations.<ref name="Chalker"/> Today, [[MRI]] complements these efforts, as it is both a live and multiplanar method of examination.<ref name=oconnell/>
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==Female genital modification==
 
{{main|genital modification and mutilation}}
 
{{main|genital modification and mutilation}}
   
The external part of the clitoris may be partially or totally removed during [[female genital cutting]], also known as a clitoridectomy or female genital mutilation (FGM) in voluntary or involuntary procedures. The topic is highly controversial with many countries condemning the traditions that give rise to involuntary procedures, and with some countries outlawing even voluntary procedures. [[Amnesty International]] estimates that over 2 million involuntary female circumcisions are being performed every year, mainly in [[Africa]]n countries.
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The external part of the clitoris may be partially or totally removed during [[female genital cutting]], also known as a clitoridectomy, female circumcision, or female genital mutilation (FGM); this may be a voluntary or involuntary procedure. The topic is highly controversial with many countries condemning the traditions that give rise to involuntary procedures, and with some countries outlawing even voluntary procedures. [[Amnesty International]] estimates that over 2 million involuntary female circumcisions are being performed every year, mainly in [[Africa]]n countries.
   
In various cultures, the clitoris is sometimes [[Clitoris piercing|pierced directly]]. In U.S. body modification culture, it's actually extremely rare for the clitoral shaft itself to be pierced, as of the already few females who desire the piercing, only a small percentage are anatomically suited for it; furthermore, most piercing artists are understandably reluctant to attempt such a delicate procedure. Some styles, such as the [[Isabella piercing|Isabella]], the [[Nefertiti piercing|Nefertiti]], and the [[triangle piercing|triangle]], do pass through the clitoris but are placed deep at the base, where they provide unique stimulation; they still require the proper genital build, but are more common than shaft piercings. Additionally, what is (erroneously) referred to as a "clit piercing" is almost always the much more common (and much less complicated) [[clitoral hood piercing]].
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In various cultures, the clitoris is sometimes [[Clitoris piercing|pierced directly]]. In U.S. body modification culture, it is actually extremely rare for the clitoral shaft itself to be pierced, as of the already few people who desire the piercing, only a small percentage are anatomically suited for it; furthermore, most piercing artists are reluctant to attempt such a delicate procedure. Some styles, such as the [[Isabella piercing|Isabella]], do pass through the clitoris but are placed deep at the base, where they provide unique stimulation; they still require the proper genital build, but are more common than shaft piercings. Additionally, what is (erroneously) referred to as a "clit piercing" is almost always the much more common (and much less complicated) [[clitoral hood piercing]].
   
Some cultures at various times in history have practiced stretching, which can enlarge the clitoris, or can make it more visible. Enlargement may be intentional or unintentional. Those taking hormones and/or other medications as part of female-to-male transition usually experience dramatic clitoral growth; individual desires (and the difficulties of surgical phalloplasty) often result in the retention of the female genitalia, the enlarged clitoris analogous to a penis as part of the newly male body. On the other hand, use of [[anabolic steroid]]s by female bodybuilders and other athletes can result in significant enlargement of the clitoris in concert with other masculinizing effects on the female body. Temporary engorgement results from suction pumping, practiced to enhance sexual pleasure or for aesthetic purposes.
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Enlargement may be intentional or unintentional. Those taking hormones and/or other medications as part of [[female-to-male]] [[Transitioning (transgender)|transition]] usually experience dramatic clitoral growth; individual desires (and the difficulties of surgical phalloplasty) often result in the retention of the original genitalia, the enlarged clitoris analogous to a penis as part of the transition. However, the clitoris never completely adapts to the masculinization of its owner and will never be able to ejaculate or urinate and is small in comparison to the genitalia of a natural born male. On the other hand, use of [[anabolic steroid]]s by bodybuilders and other athletes can result in significant enlargement of the clitoris in concert with other masculinizing effects on their bodies. Temporary engorgement results from suction pumping, practiced to enhance sexual pleasure or for aesthetic purposes.
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==In Male-to-Female Transsexual People==
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Male-to-female transsexual individuals who undergo [[sex reassignment surgery (male-to-female)]] (SRS) may choose to have their surgeon design a clitoris, using their existing genital tissue. The new clitoris may be referred to as a ''neoclitoris''.
   
 
==Additional images==
 
==Additional images==
 
<gallery>
 
<gallery>
 
Image:Clitoris_outer_anatomy.gif|Outer anatomy of clitoris.
 
Image:Clitoris_outer_anatomy.gif|Outer anatomy of clitoris.
Image:Gray408.png|Muscles of the female perineum.
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Image:Gray408.png|Muscles of the perineum.
Image:Gray1166.png|Sagittal section of the lower part of a female trunk, right segment.
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Image:Gray1166.png|Sagittal section of the lower part of the trunk, right segment.
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</gallery>
 
</gallery>
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==See also==
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*[[Clitoral pump]]
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*[[Erogenous zone]]
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*[[Female reproductive system (human)]]
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*[[Labium (genitalia)]]
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*[[Masturbation]]
   
 
==References==
 
==References==
<div class="references-small">
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===Notes===
<references/>
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{{reflist}}
</div>
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===Bibliography===
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* {{cite book | url = http://books.google.ca/books?id=m3m3_Uq8qWkC&pg=PA94&lpg=PA94 | author = Chalker, Rebecca | title = The Clitoral Truth: The secret world at your fingertips | publisher = Seven Stories | location = New York| year = 2002}} (Google Books)
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* Harvey E. Anatomies of rapture: Clitoral politics/medical blazons. Signs. 27(2) Winter 2002, 315-46
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* Laqueur TW. Amor veneris, vel dulcedo appeletur, in Fragments for a History of the Human Body. 3 Feher M, NaddaffnR, Tazi N. (eds.) ZONE, NY 1989, 91-131
   
 
==External links==
 
==External links==
* [http://www.the-clitoris.com/ The-Clitoris.com] &ndash; a very thorough website about everything related to the clitoris
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{{commonscat|Clitoris}}
* [http://www.scarleteen.com/body/female_anatomy.html Pink Parts] - "Walk through" of female sexual anatomy by noted sex activist and educator Heather Corinna
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{{wiktionary|clitoris}}
* [http://www.vulvavelvet.org/anatomy.html VulvaVelvet.org] - Female sexual anatomy, including information on the structure of the clitoris
 
* [http://www.findarticles.com/p/articles/mi_m1175/is_n1_v29/ai_17955288 Article relating to vestigial clitoris controversy]
 
 
* [http://news.bbc.co.uk/1/hi/health/5013866.stm Time for rethink on the clitoris (BBC News)]
 
* [http://news.bbc.co.uk/1/hi/health/5013866.stm Time for rethink on the clitoris (BBC News)]
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* [http://www.ed-sim.com Video simulation of the clitoris in arousal]
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* [http://www.cirp.org/news/clitoris/ Williamson S, Nowak R. The truth about women. New Scientist August 1, 1998 pp 1-5] The story of Helen O'Connell
   
 
{{Female reproductive system}}
 
{{Female reproductive system}}
 
{{human anatomical features}}
 
{{human anatomical features}}
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{{sex}}
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=====tags=====
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{{Refimprove|date=June 2008}}
   
 
[[Category:Female reproductive system]]
 
[[Category:Female reproductive system]]
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[[Category:Sex organs]]
 
[[Category:Sex organs]]
   
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[[als:Klitoris]]
 
[[als:Klitoris]]
 
[[ar:بظر]]
 
[[ar:بظر]]
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[[zh-min-nan:Chi-bai-íⁿ]]
  +
[[bs:Klitoris]]
 
[[br:Ellig]]
 
[[br:Ellig]]
 
[[bg:Клитор]]
 
[[bg:Клитор]]
 
[[ca:Clítoris]]
 
[[ca:Clítoris]]
 
[[cs:Klitoris]]
 
[[cs:Klitoris]]
  +
[[cy:Clitoris]]
 
[[da:Klitoris]]
 
[[da:Klitoris]]
 
[[de:Klitoris]]
 
[[de:Klitoris]]
 
[[dv:ކުޅަނދިލި]]
 
[[dv:ކުޅަނދިލި]]
  +
[[el:Κλειτορίδα]]
 
[[es:Clítoris]]
 
[[es:Clítoris]]
 
[[eo:Klitoro]]
 
[[eo:Klitoro]]
  +
[[fa:چوچوله]]
 
[[fr:Clitoris]]
 
[[fr:Clitoris]]
 
[[gd:Brillean]]
 
[[gd:Brillean]]
 
[[gl:Clítoris]]
 
[[gl:Clítoris]]
  +
[[ko:음핵]]
 
[[hr:Klitoris]]
 
[[hr:Klitoris]]
  +
[[io:Klitorido]]
 
[[ilo:Muting]]
 
[[ilo:Muting]]
 
[[id:Klitoris]]
 
[[id:Klitoris]]
  +
[[is:Snípur]]
 
[[it:Clitoride]]
 
[[it:Clitoride]]
 
[[he:דגדגן]]
 
[[he:דגדגן]]
  +
[[ku:Klîtorîs]]
  +
[[la:Clitoris]]
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[[lb:Klitoris]]
 
[[lt:Varputė]]
 
[[lt:Varputė]]
 
[[hu:Csikló]]
 
[[hu:Csikló]]
  +
[[mk:Клиторис]]
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[[ms:Kelentit]]
 
[[nl:Clitoris]]
 
[[nl:Clitoris]]
 
[[ja:陰核]]
 
[[ja:陰核]]
 
[[no:Klitoris]]
 
[[no:Klitoris]]
  +
[[oc:Clitòris]]
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[[nds:Klitoris]]
 
[[pl:Łechtaczka]]
 
[[pl:Łechtaczka]]
 
[[pt:Clítoris]]
 
[[pt:Clítoris]]
  +
[[ro:Clitoris]]
 
[[ru:Клитор]]
 
[[ru:Клитор]]
 
[[simple:Clitoris]]
 
[[simple:Clitoris]]
 
[[sk:Dráždec]]
 
[[sk:Dráždec]]
  +
[[sl:Ščegetavček]]
 
[[sr:Клиторис]]
 
[[sr:Клиторис]]
 
[[su:Itil]]
 
[[su:Itil]]
 
[[fi:Häpykieli]]
 
[[fi:Häpykieli]]
 
[[sv:Klitoris]]
 
[[sv:Klitoris]]
  +
[[tl:Tinggil]]
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[[te:యోనిశీర్షం]]
 
[[th:คลิตอริส]]
 
[[th:คลิตอริส]]
 
[[vi:Âm vật]]
 
[[vi:Âm vật]]
 
[[tr:Klitoris]]
 
[[tr:Klitoris]]
 
[[uk:Клітор]]
 
[[uk:Клітор]]
  +
[[zh-yue:陰蒂]]
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[[diq:Gılık]]
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[[zh:陰蒂]]
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-->
 
{{enWP|Clitoris}}
 
{{enWP|Clitoris}}

Latest revision as of 13:13, January 1, 2009

Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
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Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)


Clitoris
The internal anatomy of the human vulva, with the clitoral hood and labia minora indicated as lines. The clitoris extends from the visible portion to a point below the pubic bone.
Latin '
Gray's subject #270 1266
System
MeSH A05.360.319.887.436
[[Image:|190px|center|]]
Structures of the female genitalia, with the tip of the clitoris visible above the labia minora. The pubic hair upon the labia majora has been removed.

The clitoris is a sexual organ that is present only in female mammals. In humans, the visible button-like portion is located near the anterior junction of the labia minora, above the opening of the urethra and vagina. Unlike the penis, which is homologous to the clitoris, the clitoris does not contain the distal portion of the urethra, and functions solely to induce sexual pleasure. The only known exception to this is in the Spotted Hyena. In this species, the urogenital system is unique in that the female urinates, mates and gives birth via an enlarged, erectile clitoris, known as a pseudo-penis.[1]

Pronunciation and etymologyEdit

The word is pronounced /ˈklɪtɒrɪs/ (listen ) or /klɪˈtɔərɪs/ (listen ). The plural forms are clitorises in English and clitorides in Latin. In slang, it is sometimes abbreviated as clit, which originated in the 1950s. The OED suggests that the pronunciation /ˈklaɪtɒrɪs/) is also used in the UK, and gives the likely etymology as coming from the Greek κλειτορἰς, perhaps derived from the verb κλεἰ-ειν, to shut. The Online Etymology Dictionary maintains that the etymology of this diminutive is still uncertain noting that many sources take kleitoris “Κλειτορίδ” literally from the Greek "little hill”. Other etymological candidates are key or latch, to touch or titillate lasciviously, to tickle, to be inclined (toward pleasure) and slope, from the same root as climax. It has been noted in German as der Kitzler meaning "the tickler". Its Latin genitive is clitoridis, as in "glans clitoridis".

Form Edit

The head or glans of the clitoris is roughly the size and shape of a pea, although it can be significantly larger or smaller. The clitoral glans is highly sensitive, containing as many nerve endings as the analogous organ in males, the glans penis, making it particularly well-suited for sexual stimulation.

File:Edsim clitoral glans innervation.jpg
Human vulva
Human vulva showing externally-visible features of the clitoris in relation to other components: 1. Clitoral hood (prepuce); 2. Clitoral glans; 3. Urethral orifice; 4. Vulval vestibule; 5. Labia minora; 6. Vaginal opening; 7. Labia majora (hair removed); 8. Perineum
Latin '
Gray's subject #
System {{{System}}}
MeSH A05.360.319.887
[[Image:{{{Image2}}}|190px|center|]]
{{{Caption2}}}

The clitoris is a complex structure that includes external and internal components. Projecting at the front of the vaginal commissure where the edges of the outer lips (labia majora) meet at the base of the pubic mound is the clitoral hood (prepuce), which in full or part covers the head (clitoral glans) -- commonly about the size and shape of a shirt-button. Following from the head back and up along the shaft, it is found that this extends up to several centimeters before reversing direction, branched resulting in a shaped like an inverted "V", and extending as a pair of "legs" known as the clitoral crura formed of the corpora cavernosa, which are concealed behind the labia minora, and terminating attached to the pubic arch, according to some,[2] or following interior to the labia minora to meet at the fourchette, according to others.[3]

Associated are the urethral sponge, clitoral/vestibular bulbs, perineal sponge, a network of nerves and blood vessels, suspensory ligaments, muscles and pelvic diaphragm.[4]

There is considerable variation in how much of the clitoris protrudes from the hood and how much is covered by it, ranging from complete, covered invisibility to full, protruding visibility. An article published in the Journal of Obstetrics and Gynecology in July 1992 states that the average width of the clitoral glans lies within the range of 2.5 – 4.5 mm (0.10-0.18 in), indicating that the average size is smaller than a pencil eraser. There is no identified correlation between the size of a clitoris and a woman's age, height, weight, use of oral contraceptives, or being post-menopausal. Those who have given birth tend to have slightly larger measurements.[How to reference and link to summary or text]

File:Edsim Vascular.jpg

Masters and Johnson were the first to determine that the clitoral structures surround and extend along the vagina, determining that all orgasms are of clitoral origin.[5] More recently, Australian urologist Dr. Helen O'Connell, using MRI technology, noted a direct relationship between the legs or roots of the clitoris and the erectile tissue of the clitoral bulbs and corpora, and the distal urethra and vagina.[6] She asserts that this interconnected relationship is the physiological explanation for the conjectured G-spot and experience of vaginal orgasm taking into account the stimulation of the internal parts of the clitoris during vaginal penetration.[7] Some individuals who experience orgasm from both direct clitoral stimulation of the glans and vaginal access to the internal bodies may distinguish between them in terms of both the physical and general sensations associated with each.

During sexual arousal and during orgasm, the clitoris and the whole of the genitalia engorge and change color as these erectile tissues fill with blood, and the individual experiences vaginal contractions. Masters and Johnson documented the sexual response cycle, which has four phases and is still the clinically accepted definition of the human orgasm. More recent research has determined that some can experience a sustained intense orgasm through stimulation of the clitoris and remain in the orgasmic phase for much longer than the original studies indicated, evidenced by genital engorgement, color changes, and vaginal contractions.[8]

DevelopmentEdit

At the time of development of the urinary and reproductive organs in embryogenesis the previously undifferentiated genital tubercle develops into the clitoris or the penis, along with all other major organ systems, making them homologous.[4] The clitoris is formed from the same tissues that would become the glans and upper shaft of a penis if the embryo had been exposed to “male” hormones. Changes in appearance of male and female embryos begin roughly eight weeks after conception. By birth, the genital structures have developed into the female reproductive system.[9] Embryo sex based on external genitalia is apparent to a doctor at the end of the 14th menstrual week, and the sex can usually be identified by an ultrasound after 16 to 18 menstrual weeks.[10] A condition that can develop from naturally occurring or deliberate exposure to higher than average levels of testosterone is clitoromegaly or macroclitoris, of which there are a few extreme cases.

Recognition of existenceEdit

The clitoris has been rediscovered repeatedly over the centuries (Harvey 2001, Laqueur 1989). Over a period of more than 2,500 years, some have considered the clitoris and the penis equivalent in all respects except their arrangement.[3] Medical literature first recognized the existence of the clitoris in the 16th century[How to reference and link to summary or text]. This is the subject of some dispute: Realdo Colombo (also known as Matteo Renaldo Colombo) was a lecturer in surgery at the University of Padua, Italy, and in 1559 he published a book called De re anatomica in which he described the "seat of woman's delight". Colombo concluded, "Since no one has discerned these projections and their workings, if it is permissible to give names to things discovered by me, it should be called the love or sweetness of Venus."

Colombo's claim was disputed by his successor at Padua, Gabriele Falloppio (who discovered the fallopian tube), who claimed that he was the first to discover the clitoris. Caspar Bartholin, a 17th century Danish anatomist, dismissed both claims, arguing that the clitoris had been widely known to medical science since the 2nd century. Indeed, Hippocrates used the term columella (little pillar). Avicenna named the clitoris the albatra or virga (rod). Albucasis, an Arabic medical authority, named it tentigo (tension). It was also known to the Romans, who named it (vulgar slang) landica.[11]

This cycle of suppression and discovery continued, notably in the work of De Graaf (Tractatus de Virorum Organis Generationi Inservientibus, De Mulierum Organis Generationi Inservientibus Tractatus Novus) in the 17th century and Kobelt (Die männlichen und weiblichen Wollustorgane des Menschen und einiger Säugetiere) in the 19th. De Graaf criticised Columbo's claims for this. (Harvey, Laqueur).

The full extent of the clitoris was alluded to by Masters and Johnson in 1966, but in such a muddled fashion that the significance of their description became obscured. That same year, feminist psychiatrist Mary Jane Sherfey published an article on female sexuality that described in detail the extensive nature of the internal anatomy of the clitoris and in 1981, the Federation of Feminist Women's Health Clinics (FFWHC) continued this process with anatomically precise illustrations.[3] Today, MRI complements these efforts, as it is both a live and multiplanar method of examination.[6]

Female genital modificationEdit

Main article: genital modification and mutilation

The external part of the clitoris may be partially or totally removed during female genital cutting, also known as a clitoridectomy, female circumcision, or female genital mutilation (FGM); this may be a voluntary or involuntary procedure. The topic is highly controversial with many countries condemning the traditions that give rise to involuntary procedures, and with some countries outlawing even voluntary procedures. Amnesty International estimates that over 2 million involuntary female circumcisions are being performed every year, mainly in African countries.

In various cultures, the clitoris is sometimes pierced directly. In U.S. body modification culture, it is actually extremely rare for the clitoral shaft itself to be pierced, as of the already few people who desire the piercing, only a small percentage are anatomically suited for it; furthermore, most piercing artists are reluctant to attempt such a delicate procedure. Some styles, such as the Isabella, do pass through the clitoris but are placed deep at the base, where they provide unique stimulation; they still require the proper genital build, but are more common than shaft piercings. Additionally, what is (erroneously) referred to as a "clit piercing" is almost always the much more common (and much less complicated) clitoral hood piercing.

Enlargement may be intentional or unintentional. Those taking hormones and/or other medications as part of female-to-male transition usually experience dramatic clitoral growth; individual desires (and the difficulties of surgical phalloplasty) often result in the retention of the original genitalia, the enlarged clitoris analogous to a penis as part of the transition. However, the clitoris never completely adapts to the masculinization of its owner and will never be able to ejaculate or urinate and is small in comparison to the genitalia of a natural born male. On the other hand, use of anabolic steroids by bodybuilders and other athletes can result in significant enlargement of the clitoris in concert with other masculinizing effects on their bodies. Temporary engorgement results from suction pumping, practiced to enhance sexual pleasure or for aesthetic purposes.

In Male-to-Female Transsexual PeopleEdit

Male-to-female transsexual individuals who undergo sex reassignment surgery (male-to-female) (SRS) may choose to have their surgeon design a clitoris, using their existing genital tissue. The new clitoris may be referred to as a neoclitoris.

Additional imagesEdit

See alsoEdit

ReferencesEdit

NotesEdit

  1. Laurence S. Baskina, Selcuk Yucelae, Gerald R. Cunhab, Stephen E. Glickmancd, Ned J. Placec (January 2006). A Neuroanatomical Comparison of Humans and Spotted Hyena, a Natural Animal Model for Common Urogenital Sinus: Clinical Reflections on Feminizing Genitoplasty. Journal of Urology 175 (1): 276–283.
  2. Vulva - MedicaLook Human Anatomy
  3. 3.0 3.1 3.2 Chalker, Rebecca (2000). The Clitoral Truth, 1, Seven Seas Press.
  4. 4.0 4.1 Francoeur, Robert T. (2000). The Complete Dictionary of Sexology, 180, The Continuum Publishing Company.
  5. Federation of Feminist Women’s Health Centers (1991). A New View of a Woman’s Body, 46, Feminist Heath Press.
  6. 6.0 6.1 [[O'Connell, et al|]] (October 2005). Anatomy of the Clitoris. The Journal of Urology 174: 1189 –1195.
  7. Mascall, Sharon, “Time for Rethink on the Clitoris”, BBC News. 2006 June |url=http://news.bbc.co.uk/1/hi/health/5013866.stm
  8. Bodansky, Vera and Steve (2002). The Illustrated Guide to Extended Massive Orgasm, Hunter House.
  9. Reinisch, Beasley, June and Ruth (1990). The Kinsey Institute New Report on Sex, St. Martin’s Press.
  10. Heffner, Linda (2001). Human Reproduction at a Glance, Blackwell Sciences, Ltd.
  11. J.N. Adams (1982). The Latin Sexual Vocabulary, Johns Hopkins University Press.

BibliographyEdit

  • Chalker, Rebecca (2002). The Clitoral Truth: The secret world at your fingertips, New York: Seven Stories. (Google Books)
  • Harvey E. Anatomies of rapture: Clitoral politics/medical blazons. Signs. 27(2) Winter 2002, 315-46
  • Laqueur TW. Amor veneris, vel dulcedo appeletur, in Fragments for a History of the Human Body. 3 Feher M, NaddaffnR, Tazi N. (eds.) ZONE, NY 1989, 91-131

External linksEdit

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Wiktionary: clitoris


Human anatomical features
Human body features

HEAD: ForeheadEyeEarNoseMouthTongueTeethJawFaceCheekChin

NECK: ThroatAdam's apple

TORSO: ShouldersSpineChestBreastRibcageAbdomenBelly button

Sex organs (Penis/Scrotum/Testicle or Clitoris/Vagina/Ovary/Uterus) – HipAnusButtocks

LIMBS: ArmElbowForearmWristHandFinger (Thumb - Index finger - Middle finger - Ring finger - Little finger) – LegLapThighKneeCalfHeelAnkleFootToe (Hallux)

SKIN: Hair


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