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Primary urethral groove
Structure on the penis during embryonic development From Wikipedia, the free encyclopedia
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The primary urethral groove or urethral groove is a temporary linear indentation on the underside (ventral side) of the male penis during embryonic development.
 | This article needs additional citations for verification. (December 2009) |
In humans, it typically appears around eight weeks of gestation and becomes closed into a normal male urethra by the twelfth week.
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Clinical significance
Failure of complete closure can be associated with hypospadias.[1]
References
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