Muscle that does not constitute the pelvic diaphragm is:: (A) Puborectalis, (B) Iliococcygeus, (C) Pubococcygeus, (D) Ischiococcygeus
Answer is A. Ans. A. PuborectalisCoccygeus and ischio coccygeus are one and the same.pelvic diaphragm is composed of pubococcygeus, iliococcygeus and ischio coccygeus.