Cloaca divides into which parts?

Cloaca divides into which parts?

• A. Esophagus; Trachea
• B. Stomach; Duodenum
• C. Urogenital sinus; Rectum
• D. Cecum; Appendix

Answer: (C)

During embryonic development, the cloaca is a common cavity that must separate to form distinct outlets. The division is accomplished by the urorectal septum, which extends to create two parts: a ventral urogenital sinus and a dorsal rectum (the anal canal). The urogenital sinus goes on to form parts of the urinary and genital tracts, while the rectum becomes the distal part of the large intestine and its opening. So, the cloaca divides into the urogenital sinus and the rectum. The other pairings do not reflect this embryologic split.

During embryonic development, the cloaca is a common cavity that must separate to form distinct outlets. The division is accomplished by the urorectal septum, which extends to create two parts: a ventral urogenital sinus and a dorsal rectum (the anal canal). The urogenital sinus goes on to form parts of the urinary and genital tracts, while the rectum becomes the distal part of the large intestine and its opening. So, the cloaca divides into the urogenital sinus and the rectum. The other pairings do not reflect this embryologic split.