This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Pelvic diaphragm consists of all except 
Select and explain. 
A. Pubococcygeus, B. Iliococcygeus, C. Ischiocavernous, D. Ischiococcygeus
C: Ischiocavernous
Answer: C: Ischiocavernous 
Explanation: Levator ani muscle forms pelvic diaphragm. Levator ani muscle consists of three main divisions.

Pubococcygeus
Iliococcygeus
Ischiococcygeus.