Urogenital sinus

Urogenital sinus

Infobox Embryology
Name = PAGENAME
Latin = sinus urogenitalis
GraySubject = 252
GrayPage = 1213


Caption = Urogenital sinus of female human embryo of eight and a half to nine weeks old. (Urogenital sinus labeled at bottom.)


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
GivesRiseTo = urethra, 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 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

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.jpgFetal pig dissection]


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