Gluteal region

Question 1

the greater sciatic foramen is communication between what

Answer 1

main pelvic cavity and gluteal region

Question 2

the lesser sciatic foramen is communication between what

Answer 2

gluteal region and perineum

Question 3

where does the iliotibial tract run from?

Answer 3

tubercle of iliac crest to lateral condyle of tibia

Question 4

what does a + Trrendelenburg’s sign tell you?

Answer 4

paralysis of gluteus medius and/or minimus

the pelvis is sink to the unsupported side when walking

Question 5

how does the piriformis exit the pelvis

Answer 5

greater sciatic foramen

Question 6

what is the only muscle that enters or passes through the lesser sciatic foramen

Answer 6

obturator internus muscle

Question 7

what makes up the sciatic nerve (ie what roots)?

Answer 7

ventral rami of L4, L5, S1- S3

Question 8

what does the sciatic nerve enter the gluteal region through?

Answer 8

GREATER sciatic foramen

Question 9

Origin of gluteus maximus

Answer 9

Outer surface of ilium, posterior surface of sacrum + coccyx, sacrotuberous ligament

Question 10

insertion of gluteus maximus

Answer 10

iliotibial tract or gluteal tuberosity of femur

Question 11

innervation of gluteus maximus

Answer 11

inferior gluteal nerve

Question 12

action of gluteus maximus

Answer 12

extension and laterla rotation of thigh at hip
extension of trunk

Question 13

origin of gluteus minimus

Answer 13

outer surface of ilium

Question 14

insertion of gluteus minimus

Answer 14

anterior surface of greater trochanter

Question 15

action of gluteus minimus

Answer 15

abduction + medial rotation of thigh at hip
Helps steady pelvis of supporting limb during walking

Question 16

innervation of gluteus minimus

Answer 16

superior gluteal nerve

Question 17

origin of gluteus medius

Answer 17

outer surface of ilium

Question 18

insertion of gluteus medius

Answer 18

lateral surface of greater trochanter

Question 19

action of gluteus medius

Answer 19

abduction + medial rotation of thigh at hip
Helps steady pelvis of supporting limb during walking

Question 20

innervation of gluteus medius

Answer 20

superior gluteal nerve

Question 21

origin of piriformis

Answer 21

2nd, 3rd, and 4th sacral vertebrae in the pelvis

Question 22

insertion of piriformis

Answer 22

upper border of greater trochanter

Question 23

action of piriformis

Answer 23

lateral rotation of thigh at hip

Question 24

innervation of piriformis

Answer 24

ventral rami of s1 and s2

Question 25

origin of obturator internus

Answer 25

pelvic surface of obturator membrane

Question 26

insertion of obturator internus

Answer 26

medial surface of greater trochanter

Question 27

action of obturator internus

Answer 27

lateral rotation of thigh at hip

Question 28

innervation of obturator internus

Answer 28

nerve to obturator internus

Question 29

origin of superior gemellus

Answer 29

ischial spine

Question 30

insertion of the superior gemellus

Answer 30

w/ obturator internus into medial surface of greater trochanter

Question 31

action of the superior gemellus

Answer 31

lateral rotation of thigh at hip

Question 32

innervation of the superior gemellus

Answer 32

nerve to obturator internus

Question 33

origin of the inferior gemellus

Answer 33

ischial tuberosity

Question 34

insertion of the inferior gemellus

Answer 34

w/ obturator internus into medial surface of greater trochanter

Question 35

action of the inferior gemellus

Answer 35

lateral rotation of thigh at hip

Question 36

innervation of the inferior gemellus

Answer 36

nerve to quadratus femoris

Question 37

origin of the quadratus femoris

Answer 37

lateral border of ischial tuberosity

Question 38

insertion of the quadratus femoris

Answer 38

quadrate tubercle

Question 39

action of the quadratus femoris

Answer 39

lateral rotation of thigh at hip

Question 40

innervation of the quadratus femoris

Answer 40

nerve to quadratus femoris

Question 41

what divisions make up the tibial part of the sciatic nerve

Answer 41

anterior divisions of L4-S3 ventral rami

Question 42

what divisions make up the common fibular part of the sciatic nerve

Answer 42

posterior divisions of L4-S2 ventral rami

Question 43

what divisions make up the posterior cutaneous nerve of the thigh

Answer 43

anterior divisions of S2 and S3 ventral rami | posterior divisions of S1 and S2 ventral rami

Question 44

what are the branches of the posterior cutaneous nerve of the thigh

Answer 44

gluteal branches perineal branches cutaneous branches

Question 45

All nerves of the gluteal regions pass through greater sciatic foramen except which two also pass through lesser?

Answer 45

nerve to obturator internus | pudendal nerve

Question 46

what are the two main arteries of the gluteal region?

Answer 46

internal pudendal artery | superior and inferior gluteal