Urogenital sinus
416448
149538376
2007-08-06T13:31:05Z
Mikael Häggström
2615838
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{{Infobox Embryology |
Name = {{PAGENAME}} |
Latin = sinus urogenitalis |
GraySubject = 252 |
GrayPage = 1213 |
Image = Gray1109.png |
Caption = [[Urogenital sinus]] of female human [[embryo]] of eight and a half to nine weeks old. (Urogenital sinus labeled at bottom.) |
Image2 = Gray1119.png |
Caption2 = Stages in the development of the external sexual organs in the male and female. ("Opening of urogenital sinus" labeled in diagram D.) |
System = |
CarnegieStage = 15 |
Days = |
Precursor = [[Cloaca (embryology)|Cloaca]] |
GivesRiseTo = [[urethra]], [[urinary bladder|bladder]], [[vagina]] |
MeshName = |
MeshNumber = |
DorlandsPre = s_12 |
DorlandsSuf = 12739359 |
}}
The '''urogenital sinus''' (also known as the '''persistent cloaca''') is a part of the human body only present in the [[development of the urinary and reproductive organs]]. It is the ventral part of the cloaca, formed after the [[cloaca]] separates from the [[rectum]]. It eventually becomes, among other things, the [[urinary bladder|bladder]].
==Pathology==
A '''urogenital sinus anomaly''' is also a rare [[birth defect]] in [[women]] where the [[urethra]] and [[vagina]] both open into a common channel.
==Additional images==
<gallery>
Image:Gray1107.png|Enlarged view from the front of the left Wolffian body before the establishment of the distinction of sex.
</gallery>
==External links==
* [http://www.urologyhealth.org/pediatric/index.cfm?cat=01&topic=152 Urologyhealth.org page on Urogenital Sinus anomalies]
* [http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20Laboratory/fetal%20pig/Image3.jpg Fetal pig dissection]
{{Development of urinary and reproductive systems}}[[Category:Embryology]]