Anatomy Lab 4 (Guteal Muscles)

Front 1

Gluteus maximus proximal attachment

Back 1

1. Ilium posterior to posterior gluteal line

2. Dorsal surface of sacrum and coccyx

4. Sacrotuberous ligament

Front 2

Gluteus maximus distal attachment

Back 2

1. Iliotibial tract

2. Gluteal tuberosity of femur

Front 3

Gluteus maximus intervention

Back 3

Inferior gluteal nerve

Front 4

Gluteus maximus function

Back 4

1. Extend hip joint

2. Lateral rotation

3. Assists in rising from sitting

Front 5

Gluteus medius proximal attachment

Back 5

1. External surface of ilium between anterior and posterior gluteal lines

Front 6

Gluteus medius distal attatchment

Back 6

Lateral surface of greater trochanter of femur

Front 7

Gluteus medius innervation

Back 7

Superior gluteal nerve

Front 8

Gluteus medius action

Back 8

1. Abducts hips

2. Medially rotates hip (when anterior portions shorten)

3. Keep pelvis level when opposite limb is elevated

Front 9

Gluteus mininus proximal attachment

Back 9

1. External surface of ilium between anterior and inferior gluteal lines

Front 10

Gluteus mininus distal attachment

Back 10

Anterior surface of greater trochanter

Front 11

Gluteus mininus innervation

Back 11

Superior gluteal nerve

Front 12

Gluteus mininus function

Back 12

1. Abducts hip

2. Medially rotates hip (when anterior part shortens)

3. Keeps pelvis level when opposite limb is elevated

Front 13

Tensor fasciae latae proximal attachment

Back 13

1.Anterior superior illicac spine

Front 14

Tensor fasciae latae distal attachment

Back 14

Iliotibial tract

Front 15

Tensor fasciae latae innervation

Back 15

Superior gluteal nerve

Front 16

Tensor fasciae latae main actions

Back 16

1 flexes hip

2. Stabilizes extended knee joint

Front 17

Piriformis proximal attachment

Back 17

1. Anterior surface of 2-4 sacral segments

2. Superior greater sciatic notch

3. Sacrotuberous ligament

Front 18

Piriformis distal attachment

Back 18

1. Superior border of greater trochanter of femur

Front 19

Piriformis innervation

Back 19

Anterior rami

Front 20

Piriformis action

Back 20

1. Laterally rotates extended hip joint

2. Abducts flexed hip joint

3. Steady femoral head in acetabulum

Front 21

Obturator internus proximal attachment

Back 21

1. Pelvic surface of ilium and ischium

2. Obturator membrane

Front 22

Obturator internus distal attachment

Back 22

Medial surface of greater trochanter

Front 23

Obturator internus innervation

Back 23

Nerve to obturator internus

Front 24

Obturator internus action

Back 24

1. Laterally rotates extended hip joint

2. Abducts flexed hip joint

3. Steady femoral head in acetabulum

Front 25

Superior and inferior gemelli proximal attachment

Back 25

Superior: ischial spine

Inferior: ischial tuberosity

Front 26

Superior and inferior gemelli distal attachment

Back 26

Medial surface of greater trochanter

Front 27

Superior and inferior gemelli innervation

Back 27

Superior: nerve to obturator internus

Inferior: nerve to quadratus femoris

Front 28

Superior and inferior gemelli action

Back 28

1. Laterally rotates extended hip joint

2. Abducts flexed hip joint

3. Steady femoral head in acetabulum

Front 29

Quadratus femoris proximal attachment

Back 29

Lateral border of ischial tuberosity

Front 30

Quadratus femoris distal attachment

Back 30

Tubercle on intertrochanter crest of femur and area inferior to it

Front 31

Quadratus femoris innervation

Back 31

Nerve to quadratus femoris

Front 32

Quadratus femoris action

Back 32

1. Laterally rotates hip

2. Pull femoral head into acetabulum (stabilize hip joint)