Tags: Anatomical Structure, Embryology.
The definitive urogenital sinus (also known as the persistent cloaca) is a part of the human body only present in the development of the urinary and reproductive organs. It is the ventral part of the cloaca formed after the cloaca separates from the anal canal during the fourth to seventh weeks of development.In males the UG sinus is divided into three regions: upper pelvic and phallic.
