gluteal region

Question 1

gluteus maximus

Answer 1

action: extend, laterally rotate thigh; slight extension of leg when working with tensor fascia lata
innervation: inferior gluteal nerve (L5-S1)
vasculature: superior a. and inferior gluteal a.

Question 2

gluteus medius

Answer 2

ABduct, medially rotate thigh

innervation: superior gluteal n
vasculature: superior gluteal n

Question 3

gluteus minimus

Answer 3

ABduct, medially rotate thigh

innervation: superior gluteal n
vasculature: superior gluteal a

Question 4

piriformis

Answer 4

action: ABducts, medially rotates and flexes thigh; slight extension of knee along with the gluteus maximus
innervation: ventral rami of S1 and S2
vasculature: inferior gluteal a, internal pudendal a, superior gluteal a

Question 5

obturator internus

Answer 5

action: laterally rotate thigh
innervation: nerve to obturator internus
vasculature: inferior gluteal a, internal pudendal a, superior gluteal a

Question 6

superior gemellus

Answer 6

action: laterally rotate thigh
innervation: nerve to obturator internus
vasculature: inferior gluteal a

Question 7

inferior gamellus

Answer 7

action: laterally rotate thigh
innervation: nerve to quadratus femoris
vasculature: inferior gluteal a

Question 8

quadratus femoris

Answer 8

action: laterally rotate thigh; steadies femoral head in acetabulum
innervation: nerve to quadratus femoris
vasculature: inferior gluteal a

Question 9

tensor fascia latae

Answer 9

action: ABducts, medially rotate and flex thigh
innervation: superior gluteal n
vasculature: superior gluteal a, lateral circumflex femoral a