Endodermal cloaca gives rise to all of the following except
The pa of the hindgut caudal to the attachment of the allantoic diveiculum is called the cloaca. The cloaca soon shows a subdivision into a broad ventral pa and a narrow dorsal pa. These two pas are separated from each other by the formation of the urorectal septum, which is first formed in the angle between the allantois and the cloaca. Derivatives of Hindgut - Preallantoic pa: Left one-third of transverse colon, Postallantoic pa: It forms a dilated endodermal cloaca which is divided by urorectal septum into a dorsal pa (primitive rectum) and a ventral pa (primitive urogenital sinus). Rectum Upper pa of anal canal Pas of the urogenital system derived from the primitive urogenital sinus.` Ref: Inderbir Singh's Human Embryology, eleventh edition, pg. no., 173, 175.
Rectum
Lower 1/2 of anal canal
Upper 1/2 of anal canal
Mucous membrane of bladder
General anatomy