Certified Midwife Exam Prep

Category - Midwifery

During development of a fetus there is a period after separation of the rectum from the dorsal part of the cloaca, what does the ventral part of this cloacal membrane become known as?
  1. Urogenital membrane
  2. Cloaphallus membrane
  3. Urophallus membrane
  4. Urophallus sinus
Explanation

Answer: A - After the cloacal membrane separates from the rectum, it becomes known as the urogenital membrane. The cloacal membrane is composed of the ectoderm and the endoderm that go from the umbilical cord to the tail, separating the cloacal from the exterior.  This happens in the 4th to 7th week of pregnancy.

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