Gynaecology & Obstetrics All but one are true regarding levator ani musle A Levator ani muscles constitute pelvic diaphragm B Contraction of levator pulls rectum and vagina towards symphysis pubis C Insertion of the muscle is fixed D Internal rotation of presenting part during delivery is assisted by levator muscles 💡 Explanation All but one are true regarding levator ani musle ✓ Correct Answer: C. Insertion of the muscle is fixed