Obturator internus, gemelli, quadrator femoris muscles

Question 1

Insertion of obturator internus?

Answer 1

Medial surface of the greater trochanter

Question 2

Innervation of obturator internus?

Answer 2

Obturator n.

L5, S1

Question 3

Action of obturator internus and Gemelli?

Answer 3

External rotation, adduction, extension of hip joint

also active in abduction, depending on joint position

Question 4

Origin of gemelli?

Answer 4

Gemellus superior: ischial spine

Gemellus inferior: ischial tuberosity

Question 5

Insertion of gemelli?

Answer 5

Jointly with obturator internus tendon

medial surface, greater trochanter

Question 6

Origin of quadratus femoris?

Answer 6

Lateral border of ischial tuberosity

Question 7

Insertion of quadratus femoris?

Answer 7

Intertrochanteric crest of the femur

Question 8

Action of quadratus femoris?

Answer 8

External rotation and adduction of hip joint

Question 9

Origin of obturator internus?

Answer 9

Inner surface of the obturator membrane and its bony boundaries

Question 10

Innervation of gemelli and quadrator femoris?

Answer 10

Nerve to quadrator femoris

L5, S1