Primary urethral groove
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|Primary urethral groove|
|Gives rise to||urethra|
|Latin||sulcus urethralis primarius|
The primary urethral groove or urethral groove is a temporary linear indentation on the underside (ventral side) of the male penis during embryonic development.
In humans, it typically appears around 8 weeks of gestation and becomes closed into a normal male urethra by the 12th week.
- Holland AJ, Smith GH (August 2000). "Effect of the depth and width of the urethral plate on tubularized incised plate urethroplasty". J. Urol. 164 (2): 489–91. PMID 10893631. doi:10.1016/S0022-5347(05)67408-3.