Muscles of the Iliac Region and Gluteal Region

Question 1

Psoas major origin

Answer 1

Ventral surfaces and bases of transverse processes of all Lumbar vertebrae and intervertebral discs of T12-L5

Question 2

Psoas major insertion

Answer 2

Apex of lesser trochanter medial to insertion of iliacus

Question 3

Psoas major innervation

Answer 3

L2-L3

Question 4

Psoas major function

Answer 4

Flex hip and lumbar spine

Question 5

Psoas minor origin

Answer 5

T12-L1 and disc between them

Question 6

Psoas minor insertion

Answer 6

Iliopectineal eminence and iliac fossa

Question 7

Psoas minor innervation

Answer 7

L1

Question 8

Psoas minor function

Answer 8

Flex spine

Question 9

Iliacus origin

Answer 9

Iliac fossa from ASIS/AIIS to superolateral ala of sacrum

Anterior sacroiliac and iliolumbar ligaments

Question 10

Iliacus insertion

Answer 10

Base of lesser trochanter

Question 11

Iliacus innervation

Answer 11

Femoral nerve

Question 12

Iliacus function

Answer 12

Flex hip

Question 13

Gluteus maximus origin

Answer 13

Posterior gluteal line

Superior surface of sacrum and coccyx

Sacrotuberous ligament

Gluteal aponeurosis

Question 14

Gluteus medius insertion

Answer 14

Superficial proximal fibers on IT band

Deep fibers on gluteal tuberosity

Question 15

Gluteus medius innervation

Answer 15

INferior gluteal nerve

Question 16

Gluteus medius function

Answer 16

Extend, laterally rotate, and abduct thigh

Question 17

Gluteus medius origin

Answer 17

Between anterior and posterior gluteal lines of ilium

Question 18

Gluteus medius insertion

Answer 18

Oblique bony ridge on lateral surface of greater trochanter

Question 19

Gluteus medius innervation

Answer 19

Superior gluteal nerve

Question 20

Gluteus medius function

Answer 20

Abduct and medially rotate thigh

Flex and medially rotate hip (anterior fibers)

Laterally rotate hip (posterior fibers)

Question 21

Gluteus minimus origin

Answer 21

Between anterior and inferior gluteal lines and edge of greater sciatic notch

Question 22

Gluteus minimus insertion

Answer 22

Anterior border of greater trochanter

Question 23

Gluteus minimus innervation

Answer 23

Superior gluteal nerve

Question 24

Gluteus minimus function

Answer 24

Medially rotate and extend hip

Weak flexor

Question 25

Gluteus medius and minimus functions in gait

Answer 25

Stabilize pelvis

Question 26

Tensor fascia latae origin

Answer 26

ANterior end of the iliac crest near ASIS

Question 27

Tensor fascia latae insertion

Answer 27

IT tract slightly distal to greater trochanter

Question 28

Tensor fascia latae innervation

Answer 28

Superior gluteal nerve

Question 29

Tensor fascia latae function

Answer 29

Flex and medially rotate hip

Question 30

Piriformis origin

Answer 30

Anterior surface of 1-4 sacral vertebrae between foramina

Question 31

Piriformis insertion

Answer 31

Passes through greater sciatic foramen to insert on superior border of greater trochanter

Question 32

Piriformis innervation

Answer 32

S2 (sometimes S1 as well)

Question 33

Piriformis function

Answer 33

Laterally rotate and abduct a flexed hip

Question 34

Obturator internus origin

Answer 34

Inside surface of superior and inferior pubic rami Ischial ramus Obturator membrane

Question 35

Obturator internus insertion

Answer 35

Medial surface of the greater trochanter anterior to trochanteric fossa

Question 36

Obturator internus innervation

Answer 36

Nerve to obturator internus

Question 37

Obturator internus function

Answer 37

Laterally rotate and extend hip

Question 38

Superior gemellus origin

Answer 38

Outer surface of ischial spine

Question 39

Superior gemellus insertion

Answer 39

Fuses with fibers of obturator internus to insert on medial surface of greater trochanter

Question 40

SUperior gemellus innervation

Answer 40

Nerve to obturator internus

Question 41

Superior gemellus function

Answer 41

Laterally rotate hip

Question 42

Inferior gemellus origin

Answer 42

Upper part of ischial tuberosity

Question 43

Inferior gemellus insertion

Answer 43

Medial surface of greater trochanter of femur in common with obturator internus

Question 44

Inferior gemellus innervation

Answer 44

Nerve to quadratus femoris

Question 45

Inferior gemellus function

Answer 45

Laterally rotate hip

Question 46

Quadratus femoris origin

Answer 46

External margin (lateral edge) of ischial tuberosity

Question 47

Quadratus femoris insertion

Answer 47

Linea quadrata and quadrate tubercle of femur

Question 48

Quadratus femoris innervation

Answer 48

Nerve to quadratus femoris

Question 49

Quadratus femoris function

Answer 49

Adduct and laterally rotate hip