WordNet

a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
anything with a round shape resembling a teardrop
a rounded part of a cylindrical instrument (usually at one end); "the bulb of a syringe"
a rounded dilation or expansion in a canal or vessel or organ

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『球根』(ユり・タマネギなどの地下茎),りん(鱗)茎,球茎 / 球根状のもの;電球,真空管

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/09 00:39:02」(JST)

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The sub-areas of the clitoris—areas include clitoral glans, body, crura. The vestibular bulbs and corpora cavernosa are also shown.

In female anatomy, the vestibular bulbs, also known as the clitoral bulbs, are aggregations of erectile tissue that are an internal part of the clitoris. They can also be found throughout the vestibule—next to the clitoral body, clitoral crura, urethra, urethral sponge, and vagina.

They are to the left and right of the urethra, urethral sponge, and vagina.

The vestibular bulbs are homologous to the bulb of penis and adjoining part of the corpus spongiosum of the male, and consists 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.^[1]

References

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

^ Chalker, Rebecca (2000). The Clitoral Truth. Seven Seas Press. p. 200. ISBN 1-58322-473-4.

External links

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

English Journal

Topographic organization of the central projections of the spiral ganglion in cats.

Leake PA, Snyder RL.SourceEpstein and Coleman Laboratories, Department of Otolaryngology, University of California, San Francisco 94143-0526.
The Journal of comparative neurology.J Comp Neurol.1989 Mar 22;281(4):612-29.
The morphological organization of inputs from restricted sectors of the cat cochlear spiral ganglion into the cochlear nucleus was studied by making focal extracellular injections of horseradish peroxidase (HRP) into the spiral ganglion. Injections resulted in Golgi-like labeling of a small cluster
PMID 2708585

「前庭球」

Vestibular bulbs
	The internal anatomy of the human vulva, with the clitoral hood and labia minora indicated as lines
	Genital organs of female.; 1 - vaginal opening; 2 - Bartholin's glands; 3 - bulbus vestibuli; 4 - vagina; 5 - uterus (womb); 6 - ovaries; 7 - Fallopian tubes; 8 - bladder; 9 - clitoris
Details
Latin	bulbus vestibuli vaginae
Artery	artery of bulb of vestibule
Vein	vein of bulb of vestibule
Lymph	superficial inguinal lymph nodes
Identifiers
Gray's	p.1266
Dorlands; /Elsevier	12200326
TA	A09.2.01.013
FMA	20199
	Anatomical terminology

　　[★]

英: vestibular bulb (KH), bulb of vestibule (Z)
ラ: bulbus vestibuli
関: 腟

図：KH.257 N.361
男性の尿道球に相当
- 前庭球が正中ので癒合したものが尿道球と考えることができるかも
球海綿体筋に完全に覆われている
- 男性の場合も尿道球は球海綿体筋に完全に覆われている

参考

1. シェーマ

vestibular bulb

http://www.edoctoronline.com/media/19/photos_CCC6A91C-9C35-477A-9104-46FB401CB0C1.jpg

D vestibular bulb;

http://www.elsevierimages.com/image/25247.htm

「bulb」

　　[★]

n.

球、(植物)鱗茎

関: ball、globe、globus、sphere、olfactory bulb

[1] Chalker, Rebecca (2000). The Clitoral Truth. Seven Seas Press. p. 200. ISBN 1-58322-473-4.

匿名

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案内

案内

bulbus vestibuli