Musculoskeletal Structures: Pelvic Wall Muscles

Question 1

Obturator Internus muscle

Answer 1

From lat wall of pelvis
Insert at femur (via lesser sciatic foramen)
Lat rotation of hip
Nerve to obturator internus/ obturator n passes by

Question 2

Piriformis muscle

Answer 2

From post wall of pelvis
Insert at femur (via greater sciatic foramen)
Lat rotation of hip
Nerve to piriformis/ sacral plexus associates

Question 3

Anterior Wall

Answer 3

Pubic bones + part of obturator internus m

Question 4

The Floor

Answer 4

Pelvic Diaphragm