persistent cloaca
(redirected from sinus urogenitalis)per·sis·tent clo·a·ca
a condition in which the urorectal fold has failed to divide the cloaca into rectal and urogenital portions.
Synonym(s): sinus urogenitalis, urogenital sinus (2)
per·sis·tent clo·a·ca
(pĕr-sis'tĕnt klō-ā'kă)A condition in which the urorectal septum has failed to divide the cloaca of the embryo into rectal and urogenital portions.