Muscles that Laterally Rotate Hip

Question 1

Piriformis
(origin)

Answer 1

Anterior surface of sacrum

Question 2

Piriformis
(insertion)

Answer 2

Greater trochanter of femur

Question 3

Piriformis
(Action)

Answer 3

Lateral rotation of hip, abduction of thigh when knee is flexed

Question 4

Piriformis
(innervation)

Answer 4

Sacral nerves 1-2

Question 5

Obturator Internus
(origin)

Answer 5

obturator membrane, bone around obturator foramen internal surface

Question 6

Obturator Internus
(insertion)

Answer 6

Medial surface of greater trochanter

Question 7

Obturator Internus
(action)

Answer 7

lateral rotation of hip, abduction of thigh when hip flexed

Question 8

Obturator Internus
(innervation)

Answer 8

Nerve to the obturator internus

Question 9

Superior Gemellus
(origin)

Answer 9

Ischial spine

Question 10

Superior Gemellus
(insertion)

Answer 10

superior boarder of obturator internus tendon

Question 11

Superior Gemellus
(action)

Answer 11

Lateral rotation of hip, abduction fo thigh when hip is flexed

Question 12

Superior Gemellus
(innervation)

Answer 12

Nerve to the obturator internus

Question 13

Inferior Gemellus
(origin)

Answer 13

Ischial Tuberosity

Question 14

Inferior Gemellus
(insertion)

Answer 14

Inferior surface of obturator internus tendon

Question 15

Inferior Gemellus
(action)

Answer 15

Lateral rotation of hip, abduction of thigh when hip is flexed

Question 16

Inferior Gemellus
(innervation)

Answer 16

Nerve to the quadratus femoris

Question 17

Obturator externus
(origin)

Answer 17

Obturator membrane, bone around obturator foramen on external surface

Question 18

Obturator externus
(insertion)

Answer 18

Trochanteric fossa of the femur

Question 19

Obturator externus
(action)

Answer 19

Lateral rotation of hip

Question 20

Obturator externus
(innervation)

Answer 20

obturator nerve