Genital tubercle: Difference between revisions
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Precursor = [[somatopleure]]<ref name="isbn0-914168-99-1">{{cite book |author=Netter, Frank H.; Cochard, Larry R. |title=Netter's Atlas of human embryology |publisher=Icon Learning Systems |location=Teterboro, N.J |year=2002 |pages=159 |isbn=0-914168-99-1 |oclc= |doi=}}</ref> | | Precursor = [[somatopleure]]<ref name="isbn0-914168-99-1">{{cite book |author=Netter, Frank H.; Cochard, Larry R. |title=Netter's Atlas of human embryology |publisher=Icon Learning Systems |location=Teterboro, N.J |year=2002 |pages=159 |isbn=0-914168-99-1 |oclc= |doi=}}</ref> | | ||
GivesRiseTo = | GivesRiseTo = genital swelling, [[mons pubis]], [[clitoris]], [[penis]] | | ||
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==Overview== | ==Overview== | ||
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{{Development of urinary and reproductive systems}} | {{Development of urinary and reproductive systems}} | ||
[[Category:Embryology]] | [[Category:Embryology]] | ||
Latest revision as of 15:29, 9 August 2012
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Overview
A genital tubercle is a body of tissue present in the development of the urinary and reproductive organs. It forms in the ventral, caudal region of mammalian embryos of both sexes, and eventually develops into a phallus. In the human fetus the genital tubercle develops around week 4 of gestation, and by week 9 becomes recognizably either a clitoris or penis.
Even after the phallus is developed, the term genital tubercle remains, but only as the terminal end of it[1], which develops into either the glans penis or the glans clitoridis.
The genital tubercle is sensitive to dihydrotestosterone and rich in 5-alpha-reductase, so that the amount of fetal testosterone present after the second month is a major determinant of phallus size at birth.