Muscles Of Gluteal Region

Question 1

Gluteus Maximus

Answer 1

O: posterior ilium to posterior gluteal line, sacrum, sacrotuberous ligament
I: gluteal tuberosity and ITB
A: extend thigh when running and climbing, sit to stand; laterally rotates the hip
N: inferior gluteal nerve

Question 2

Piriformis

Answer 2

O: pelvic surface of the sacrum
I: greater trochanter
A: lateral rotation and extension of thigh
N: nerve to piriformis

Question 3

Gluteus Medius

Answer 3

O: ilium between iliac crest and superior gluteal line
I: greater trochanter
A: abducts and medially rotates thigh
N: superior gluteal nerve

Question 4

Obturator Internus

Answer 4

O: obturator membrane
I: greater trochanter
A: laterally rotate and extend thigh
N: nerve to the obturator internus

Question 5

Superior Gamellus

Answer 5

O: ischial spine
I: greater trochanter
A: laterally rotate and extend the thigh
N: nerve to obturator internus

Question 6

Inferior Gamellus

Answer 6

O: ischial tuberosity
I: greater trochanter
A: laterally rotate and extend the thigh
N: nerve to quadratus femorus

Question 7

Quadratus Femorus

Answer 7

O: ischial tuberosity
I: intertrochanteric crest
A: laterally rotate and extend the thigh
N: nerve to quadratus femoris

Question 8

Gluteus Minimus

Answer 8

O: ilium between superior and inferior gluteal lines
I: greater trochanter
A: abduct and medially rotate the thigh
N: superior gluteal nerve

Question 9

Obturator Externus

Answer 9

O: obturator membrane
I: trochanteric fossa
A: adduct and laterally rotate the thigh
N: obturator nerve

Question 10

Tensor Fascia Lata

Answer 10

O: iliac crest
I: ITB
A: abduct and flexes the thigh
N: superior gluteal nerve