Sinus Tubercle

**Semantic type:** Embryonic Structure

**Definition:** A proliferation of endoderm on the dorsal wall of the urogenital sinus that is formed by the fusion of the paramesonephric ducts during embryonic development, and which will ultimately form the colliculus seminalis in the male and the hymen in the female.

**Synonyms:** - Muller Tubercle - Müller Tubercle