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Bulb of vestibule


Source: http://en.wikipedia.org/wiki/Bulb_of_vestibule
Updated: 2017-05-06T13:09Z
Vestibular bulbs
Clitoris anatomy labeled-en.svg
The internal and external anatomy of the human clitoris, as well as the urethral and vaginal openings. The clitoral hood and labia minora are simply indicated as lines (uncolored).
Details
Arteryartery of bulb of vestibule
Veinvein of bulb of vestibule
Lymphsuperficial inguinal lymph nodes
Identifiers
Latinbulbus vestibuli vaginae
Dorlands
/Elsevier
12200326
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Anatomical terminology
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In female anatomy, the vestibular bulbs or bulbs of the vestibule, are also known less commonly as the clitoral bulbs.[1] They are located on either side of the vestibule surrounding the urethral and vaginal openings and deep to the tissues of the labia minora.[2]

The vestibular bulbs are homologous to the bulb of penis and adjoining part of the corpus spongiosum of the male, and consist of two elongated masses of erectile tissue, placed one on either side of the vaginal orifice and united to each other in front by a narrow median band termed the pars intermedia.

Their posterior ends are expanded and are in contact with the greater vestibular glands; their anterior ends are tapered and joined to one another by the pars intermedia; their deep surfaces are in contact with the inferior fascia of the urogenital diaphragm; superficially they are covered by the bulbospongiosus.

Physiology

During the response to sexual arousal the bulbs fill with blood, which then becomes trapped, causing erection. As the clitoral bulbs fill with blood, they tightly cuff the vaginal opening, causing the vulva to expand outward. This may put pressure on nearby structures that include the corpus cavernosum of clitoris and crus of clitoris.

The blood inside the bulb’s erectile tissue is released to the circulatory system by the spasms of orgasm, but if orgasm does not occur, the blood will exit the bulbs over several hours.[3]

Additional images

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ^ Yang, Claire C.; Cold, Christopher J.; Yilmaz, Ugur; Maravilla, Kenneth R. (2006-04-01). "Sexually responsive vascular tissue of the vulva". BJU international. 97 (4): 766–772. ISSN 1464-4096. PMID 16536770. doi:10.1111/j.1464-410X.2005.05961.x. 
  2. ^ Puppo, Vincenzo; Puppo, Giulia (2015-04-01). "Anatomy of sex: Revision of the new anatomical terms used for the clitoris and the female orgasm by sexologists". Clinical Anatomy (New York, N.Y.). 28 (3): 293–304. ISSN 1098-2353. PMID 25283533. doi:10.1002/ca.22471. 
  3. ^ Chalker, Rebecca (2000). The Clitoral Truth. Seven Seas Press. p. 200. ISBN 1-58322-473-4. 

External links

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