DPT 6160 EXAM 2: MUSCLES OF THE PELVIS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED

DPT 6160 EXAM 2: MUSCLES OF THE PELVIS EXAM QUESTIONS

AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED


peritoneum

lining the abdominal cavity and continues into the pelvic cavity, reflecting on the

superior aspects of most pelvic viscera

antero-inferior pelvic wall

2 lateral pelvic walls

posterior pelvic wall

What are the walls of the pelvic cavity?

antero-inferior pelvic wall

formed primarily by the bodies and rami of the pubic bones and the pubic symphysis;

participates in bearing the weight of the urinary bladder

lateral pelvic walls

bony framework formed by the hip bones, including the obturator foramen closed by the

obturator membrane; have the obturator nerves and vessels and other branches of the

internal iliac vessels located on their medial aspects

piriformis

obturator internus

What muscles make up the pelvic wall?

obturator internus muscles

What are the lateral pelvic walls covered and padded by?

, obturator internus muscles (lateral wall)

medial surfaces of these muscles are covered by obturator fascia

obturator internus muscle

Proximal:

- pelvic surface of ilium and ischium

- obturator membrane

Distal:

- greater trochanter

Innervation:

- nerve to obturator internus

What muscle is this?

Proximal attachment?

Distal attachment?

Innervation?

- laterally rotates hip

- assists in holding head of femur in acetabulum

What are the main actions of the obturator internus muscle?

obturator fascia

thickened centrally as a tendinous arch that provides attachment for the levator ani

(pelvic diaphragm)

piriformis muscle (posterior wall)

leaves the lesser pelvis through the greater sciatic foramen to attach to the femur

piriformis muscle