In female anatomy, the vestibular bulbs, bulbs of the vestibule or clitoral bulbs are two elongated masses of erectile tissue typically described as being situated on either side of the vaginal opening. They are united to each other in front by a narrow median band. Some research indicates that they do not surround the vaginal opening, and are more closely related to the clitoris than to the vestibule.[1] They constitute the root of the clitoris along with the crura.
Vestibular bulbs
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).
Research indicates that the vestibular bulbs are more closely related to the clitoris than to the vestibule because of the similarity of the trabecular and erectile tissue within the clitoris and bulbs, and the absence of trabecular tissue in other genital organs, with the erectile tissue's trabecular nature allowing engorgement and expansion during sexual arousal.[1] Ginger et al. state that although a number of texts report that they surround the vaginal opening, this does not appear to be the case and tunica albuginea does not envelop the erectile tissue of the bulb.[1]
The vestibular bulbs are homologous to the bulb of penis and the adjoining part of the corpus spongiosum of the male and consist of two elongated masses of erectile tissue.[2] 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.
Physiologyedit
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 puts pressure on nearby structures that include the corpora cavernosa and crura, inducing pleasure.
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 imagesedit
The sub-areas of the clitoris—areas include clitoral glans, body, crura. The vestibular bulbs and corpora cavernosa are also shown.
Clitoral bulbs under the labia and on both sides of the vaginal entrance
Referencesedit
This article incorporates text in the public domain from page 1266 of the 20th edition ofGray's Anatomy(1918)
^ abcGinger, V A T; Yang, C C (2011). "Chapter 2: Functional Anatomy of the Female Sex Organs". In Mulhall, John P.; Incrocci, Luca; Goldstein, Irwin; Rosen, Ray (eds.). Cancer and Sexual Health. Springer Publishing. pp. 13–22. ISBN978-1-60761-915-4. Retrieved June 23, 2012.
^Clemente, Carmine D. (2010). Clemente's Anatomy Dissector: Guides to Individual Dissections in Human Anatomy with Brief Relevant Clinical Notes (applicable for Most Curricula). Wolters Kluwer/Lippincott Williams & Wilkins Health. p. 205. ISBN978-1-60831-384-6. Retrieved September 29, 2023.
^Chalker, Rebecca (2000). The Clitoral Truth. Seven Seas Press. p. 200. ISBN1-58322-473-4.
External linksedit
Anatomy photo:41:11-0204 at the SUNY Downstate Medical Center - "The Female Perineum: Muscles of the Superficial Perineal Pouch"
figures/chapter_38/38-4.HTM: Basic Human Anatomy at Dartmouth Medical School
bulb, vestibule, female, anatomy, vestibular, bulbs, bulbs, vestibule, clitoral, bulbs, elongated, masses, erectile, tissue, typically, described, being, situated, either, side, vaginal, opening, they, united, each, other, front, narrow, median, band, some, re. In female anatomy the vestibular bulbs bulbs of the vestibule or clitoral bulbs are two elongated masses of erectile tissue typically described as being situated on either side of the vaginal opening They are united to each other in front by a narrow median band Some research indicates that they do not surround the vaginal opening and are more closely related to the clitoris than to the vestibule 1 They constitute the root of the clitoris along with the crura Vestibular bulbsThe 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 DetailsArteryartery of bulb of vestibuleVeinvein of bulb of vestibuleLymphsuperficial inguinal lymph nodesIdentifiersLatinbulbus vestibuli vaginaeTA98A09 2 01 013TA23560FMA20199Anatomical terminology edit on Wikidata Contents 1 Structure 2 Physiology 3 Additional images 4 References 5 External linksStructure editResearch indicates that the vestibular bulbs are more closely related to the clitoris than to the vestibule because of the similarity of the trabecular and erectile tissue within the clitoris and bulbs and the absence of trabecular tissue in other genital organs with the erectile tissue s trabecular nature allowing engorgement and expansion during sexual arousal 1 Ginger et al state that although a number of texts report that they surround the vaginal opening this does not appear to be the case and tunica albuginea does not envelop the erectile tissue of the bulb 1 The vestibular bulbs are homologous to the bulb of penis and the adjoining part of the corpus spongiosum of the male and consist of two elongated masses of erectile tissue 2 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 editDuring 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 puts pressure on nearby structures that include the corpora cavernosa and crura inducing pleasure 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 edit nbsp The sub areas of the clitoris areas include clitoral glans body crura The vestibular bulbs and corpora cavernosa are also shown nbsp Clitoral bulbs under the labia and on both sides of the vaginal entranceReferences edit nbsp This article incorporates text in the public domain from page 1266 of the 20th edition of Gray s Anatomy 1918 a b c Ginger V A T Yang C C 2011 Chapter 2 Functional Anatomy of the Female Sex Organs In Mulhall John P Incrocci Luca Goldstein Irwin Rosen Ray eds Cancer and Sexual Health Springer Publishing pp 13 22 ISBN 978 1 60761 915 4 Retrieved June 23 2012 Clemente Carmine D 2010 Clemente s Anatomy Dissector Guides to Individual Dissections in Human Anatomy with Brief Relevant Clinical Notes applicable for Most Curricula Wolters Kluwer Lippincott Williams amp Wilkins Health p 205 ISBN 978 1 60831 384 6 Retrieved September 29 2023 Chalker Rebecca 2000 The Clitoral Truth Seven Seas Press p 200 ISBN 1 58322 473 4 External links editAnatomy photo 41 11 0204 at the SUNY Downstate Medical Center The Female Perineum Muscles of the Superficial Perineal Pouch figures chapter 38 38 4 HTM Basic Human Anatomy at Dartmouth Medical School Portal nbsp Anatomy Retrieved from https en wikipedia org w index php title Bulb of vestibule amp oldid 1213588541, wikipedia, wiki, book, books, library,
