Gynaecology & Obstetrics General 9c568b23 Pelvic diaphragm consists of all except A Pubococcygeus B Iliococcygeus C Ischiocavernous D Ischiococcygeus High-Yield Explanation Levator ani muscle forms pelvic diaphragm. Levator ani muscle consists of three main divisions. Pubococcygeus Iliococcygeus Ischiococcygeus.