Muscles that laterally rotate the hip

Question 1

gluteus maximus origin

Answer 1

lateral surface of ilium behind posterior gluteal line, posterior to sacrum

Question 2

gluteus maximus insertion

Answer 2

iliotibial tract, gluteal tuberosity of femur

Question 3

gluteus maximus action

Answer 3

extend hip, lateral rotation of hip, abduction (upper fibers)

Question 4

gluteus maximus innervation

Answer 4

inferior gluteal nerve

Question 5

gluteus maximus blood supply

Answer 5

inferior and superior gluteal arteries

Question 6

piriformis origin

Answer 6

sacrum, anterior surface

Question 7

piriformis insertion

Answer 7

greater trochanter

Question 8

piriformis action

Answer 8

lateral rotation of hip, abduction of thigh when hip flexed

Question 9

piriformis innervation

Answer 9

sacral nerves 1-2

Question 10

piriformis blood supply

Answer 10

inferior branch of lateral sacral artery

Question 11

obturator internus origin

Answer 11

obturator membrane, bone around obturator foramen

Question 12

obturator internus insertion

Answer 12

medial surface of greater trochanter

Question 13

obturator internus action

Answer 13

lateral rotation of hip, abduction of thigh when hip flexed

Question 14

obturator internus innervation

Answer 14

nerve to the obturator internus

Question 15

obturator internus blood supply

Answer 15

obturator artery

Question 16

superior gemellus origin

Answer 16

ischial spine

Question 17

superior gemellus insertion

Answer 17

superior border of obturator internus tendon

Question 18

superior gemellus action

Answer 18

lateral rotation of hip, abduction of thigh when hip flexed

Question 19

superior gemellus innervation

Answer 19

nerve to obturator internus

Question 20

superior gemellus blood supply

Answer 20

internal pudendal artery

Question 21

inferior gemellus origin

Answer 21

ischial tuberosity

Question 22

inferior gemellus insertion

Answer 22

inferior border of obturator internus tendon

Question 23

inferior gemellus action

Answer 23

lateral rotation of hip, abduction of thigh when hip flexed

Question 24

inferior gemellus innervation

Answer 24

nerve to quadratis femoris

Question 25

inferior gemellus blood supply

Answer 25

medial circumflex femoral artery

Question 26

quadratus femoris origin

Answer 26

ischial tuberosity

Question 27

quadratus femoris insertion

Answer 27

posterior surface of femur between trochanters

Question 28

quadratus femoris action

Answer 28

lateral rotation of hip, adduction of hip

Question 29

quadratus femoris innervation

Answer 29

nerve to quadratus femoris

Question 30

quadratus femoris blood supply

Answer 30

inferior gluteal artery

Question 31

obturator externus origin

Answer 31

obturator membrane, bone around obturator foramen on external surface

Question 32

obturator externus insertion

Answer 32

trochanteric fossa on the femur

Question 33

obturator externus action

Answer 33

lateral rotation of hip

Question 34

obturator externus innervation

Answer 34

obturator nerve

Question 35

obturator externus blood supply

Answer 35

obturator artery