ANA300Y1 Study Guide - Quiz Guide: Perineum, Obturator Foramen, Lesser Sciatic Foramen
Document Summary
Muscles of walls and floor of pelvic cavity. Obturator membrane: pelvic aspect, and surrounding pelvic bones. Nerve to obturator internus: (l5, s1 2) The lateral pelvic walls are formed by the right and left hip bones; each hip bone includes an obturator foramen, enclosed by an obturator membrane. Obturator internus covers most of the lateral pelvic walls. The muscle fibers of obturator internus converge posteriorly, become tendinous, and turn sharply laterally to pass through the lesser sciatic foramen, and attach to the greater trochanter of the femur. Walls of prostate or vagina, rectum and anal canal. Helps hold head of femur in acetabulum. Clinically oriented anatomy, 5th edition, moore, and grant"s atlas of anatomy, 11th edition.
