Which of the following are true regarding levator ani EXCEPT?
(A) Levator ani muscle is attached at pelvic brim (B) Pubococcygeus and iliococcygeus are components (C) Fibres are directed posterior and medial (D) Suppos pelvic viscera
(A) Levator ani: Two levator ani muscles originate from each side of pelvic wall, course medially, inferiorly & join together in midline Levator ani muscle include 3 collections of muscle fibers- Pubococcygeus + Puborectalis + Iliococcygeus muscle Levator ani muscles help suppo pelvic viscera & maintain closure of rectum & vagina, maintain angle b/w rectum & anal canal. They are innervated by branches from anterior ramus of S4 and by branches of pudendal nerve (S2 to S4) It is attached to pubis & obturator fascia. Levator ani + ischio-coccygeus form - pelvis