Gluteal Muscles Flashcards Preview

VCU Anatomy Test 2 > Gluteal Muscles > Flashcards

Flashcards in Gluteal Muscles Deck (22):
1

The "short rotators" of the hip are in what layer of gluteal muscles?

deep

2

What are the 3 muscles of the superficial gluteal region?

1. gluteus maximus
2. gluteus medius
3. gluteus minimus

3

Gluteus maximus:
origin -
insertion -

origin - dorsal sacrum and coccyx, ilium posterior to posterior gluteal line, sacrotuberous ligament

insertion - iliotibial band (ITB) via ITB to lateral condyl of tibia (Gerdy's tubercle); gluteal tuberosity of femur

4

Gluteus maximus:
innervation -
function -

innervation: inferior gluteal nerve

function:
1.strong extension of thigh (especially from flexion... standing up);
2. external rotation thigh

5

Gluteus medius:
origin -
insertion -

O: between anterior & posterior gluteal lines

I: greater trochanter

6

Gluteus medius:
innervation -
function -

innervation: superior gluteal n.

function:
1. ABducts thigh
2. internally rotates thigh
3. keeps pelvis level during ipsilateral stance

7

Gluteus minimus:
origin -
insertion -

O: between anterior & inferior gluteal lines
I: greater trochanter

8

Gluteus minimus:
innervation -
function -

innervation: superior gluteal n.

function
1. ABducts thigh
2. internally rotates thigh
3. keeps pelvis level during ipsilateral stance

9

2 gluteal bursa

1. trochanteric bursa
2. ischial bursa

10

Which type of gluteal bursa?
separates gluteus maximus from ischial tuberosity, common site of friction bursists

ischial bursa

11

Which type of gluteal bursa?
separates gluteus maximus/ITB from greater trochanter; common site of friction bursitis

trochanteric bursa

12

4 muscles in deep layer ("short rotator group")

1. piriformis m.
2. obturator internus m.
3. superior gemilli m.
4. inferior gemilli m.

13

Piriformis:
origin -
insertion -

O: inside pelvis, anterior sacrum, sacrotuberous ligament

I: superior aspect of greater trochanter

14

Piriformis:
innervation -
function -

innervation: n. to piriformis

function:
1. externally rotates extended thigh
2. ABducts flexed thigh

15

Obturator Internus:
origin -
insertion -

O: inside surface of obturator foramen

I: trochanteris fossa (medial aspect of greater trochanter)

16

Obturator Internus:
innervation -
function -

innervation: n. to obturator internus

function :
1. externally rotates extended thigh
2. ABducts flexed thigh

17

Superior Gemilli:
origin -
insertion -

O: ischial spine

I: trochanteric fossa

18

Superior Gemilli:
innervation -
function -

innervation: n. to obturator internus

function: 1. externally rotates extended thigh
2. ABducts flexed thigh

19

Inferior Gemilli:
origin -
insertion -

O: ischial tuberosity

I: trochanteric fossa

20

Inferior Gemilli:
innervation -
function -

innervation: n. to Quadratus Femoris

function:
1. externally rotates extended thigh
2. ABducts flexed thigh

21

Quadratus Femoris:
origin -
insertion -

O: ischial tuberosity

I: intertrochanteric crest

22

Quadratus Femoris:
innervation -
function -

innervation: n. to Quadratus Femoris

function: exterally rotates thigh