Muscles of Gluteal Region

Question 0

Gluteus Maximus

Insertion

Answer 0

Most fibers end in iliotibial tract, which inserts into lateral condyle of tibia
Some fibers insert on gluteal tuberosity of femur

Question 1

Gluteus Maximus

Origin

Answer 1

Ilium post to post gluteal line
Dorsal surface of sacrum and coccyx
Sacrotuberous ligament

Question 2

Gluteus Maximus

Innervation

Answer 2

Inferior gluteal nerve

L5, S1, S2

Question 3

Gluteus Maximus

Actions

Answer 3

Extends hip joint between flexed and standing positions and assists in lateral rotation
Steadies thigh and assists in rising from sitting position

Question 4

Gluteus Medius

Origin

Answer 4

Ext surface of ilium between anterior and posterior gluteal lines

Question 5

Gluteus Medius

Insertion

Answer 5

Lateral surface of greater trochanter of femur

Question 6

Gluteus Medius

Innervation

Answer 6

Superior gluteal nerve

L4, L5, S1

Question 7

Gluteus Medius

Actions

Answer 7

Abduct and anterior portions medially rotate hip joint

Keep pelvis level when opposite limb is elevated

Question 8

Gluteus Minimus

Origin

Answer 8

Ext surface of ilium between anterior and inferior gluteal lines

Question 9

Gluteus Minimus

Insertion

Answer 9

Ant surface of greater trochanter of femur

Question 10

Gluteus Minimus

Innervation

Answer 10

Superior gluteal nerve

L4, L5, S1

Question 11

Gluteus Minimus

Actions

Answer 11

Abduct and anterior portions medially rotate hip joint

Keep pelvis level when opposite limb is elevated

Question 12

Tensor Fasciae Latae

Origin

Answer 12

Anterior superior iliac spine

Anterior part of iliac crest

Question 13

Tensor Fasciae Latae

Insertion

Answer 13

Iliotibial tract, which attaches to lateral condyle of tibia

Gerdy tubercle

Question 14

Tensor Fasciae Latae

Innervation

Answer 14

Superior gluteal nerve

L4, L5, S1

Question 15

Tensor Fasciae Latae

Actions

Answer 15

Flexes hip joint

Acts with gluteus maximus to stabilize extended knee joint

Question 16

Piriformis

Origin

Answer 16

Anterior surface of 2nd-4th sacral segments

Superior margin of greater sciatic notch and sacrotuberous ligament

Question 17

Piriformis

Insertion

Answer 17

Superior border of greater trochanter of femur

Question 18

Piriformis

Innervation

Answer 18

Branches of anterior rami S1, S2

Question 19

Piriformis

Actions

Answer 19

Laterally rotate extended hip joint
Abduct flexed hip joint
Steady femoral head in acetabulum (stabilizes hip joint)

Question 20

Obturator Internus

Origin

Answer 20

Pelvic surface of ilium and ischium

Obturator membrane

Question 21

Obturator Internus

Insertion

Answer 21

Medial surface of greater trochanter of femur

Question 22

Obturator Internus

Innervation

Answer 22

Nerve to obturator internus

L5, S1

Question 23

Obturator Internus

Actions

Answer 23

Laterally rotate extended hip joint
Abduct flexed hip joint
Steady femoral head in acetabulum (stabilizes hip joint)

Question 24

Gemelli, superior and inferior | Origin

Answer 24

S: Ischial spine I: Ischial tuberosity

Question 25

Gemelli, superior and inferior | Insertion

Answer 25

Medial surface of greater trochanter of femur

Question 26

Gemelli, superior and inferior | Innervation

Answer 26

S: Same as obturator internus I: Same as quadratus femoris

Question 27

Gemelli, superior and inferior | Actions

Answer 27

Laterally rotate extended hip joint Abduct flexed hip joint Steady femoral head in acetabulum

Question 28

Quadratus Femoris | Origin

Answer 28

Lateral border of ischial tuberosity

Question 29

Quadratus Femoris | Insertion

Answer 29

Quadrate tubercle on intertrochanteric crest of femur and area inferior to it

Question 30

Quadratus Femoris | Innervation

Answer 30

Nerve to quadratus femoris | L5, S1

Question 31

Quadratus Femoris | Actions

Answer 31

Laterally rotates hip joint | Pulls femoral head into acetabulum to stabilize hip joint/pelvis