Muscles of the Gluteal Region

Question 0

Insertion of Gluteus Maximus

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

Origin of Gluteus Maximus

Answer 1

Ilium Posterior to Posterior Gluteal Line
Dorsal surface of Sacrum and Coccyx
Sacrotuberous Ligament

Question 2

Innervation of Gluteus Maximus

Answer 2

Inferior Gluteal Nerve

L5 S1 S2

Question 3

Actions of Gluteus Maximus

Answer 3

Extends Hip Joint between Flexed and Standing positions and assists in its Lateral Rotation
Steadies thigh and assists in rising from sitting position

Question 4

Origin of Gluteus Medius

Answer 4

External surface of Ilium between Anterior and Posterior Gluteal lines

Question 5

Insertion of Gluteus Medius

Answer 5

Lateral surface of Greater Trochanter of Femur

Question 6

Innervation of Gluteus Medius

Answer 6

Superior Gluteal Nerve

L4 L5 S1

Question 7

Actions of Gluteus Medius

Answer 7

Abduct and Anterior portions Medially rotate hip joint

Keep Pelvis level when opposite limb is elevated

Question 8

Origin of Gluteus Minimus

Answer 8

External surface of Ilium between Anterior and Inferior Gluteal lines

Question 9

Insertion of Gluteus Minimus

Answer 9

Anterior surface of Greater Trochanter of Femur

Question 10

Innervation of Gluteus Minimus

Answer 10

Superior Gluteal Nerve

L4 L5 S1

Question 11

Actions of Gluteus Minimus

Answer 11

Abduct and anterior portions Medially rotate Hip joint

Keep Pelvis level when opposite limb is elevated

Question 12

Origin of Tensor Fasciae Latae

Tensor of Fascia Lata

Answer 12

Anterior Superior Iliac Spine

Anterior part of Iliac Crest

Question 13

Insertion of Tensor Fasciae Latae

Answer 13

Iliotibial Tract, which attaches to Lateral Condyle of Tibia (Gerdy Tubercle)

Question 14

Innervation of Tensor Fasciae Latae

Answer 14

Superior Gluteal Nerve

L4 L5 S1

Question 15

Actions of Tensor Fasciae Latae

Answer 15

Flexes Hip Joint

Acts with Gluteus Maximus to stabilize the extended Knee Joint

Question 16

Origin of Piriformis

Answer 16

Anterior surface of 2nd-4th Sacral segments
Superior margin of Greater Sciatic Notch
Sacrotuberous Ligament

Question 17

Insertion of Piriformis

Answer 17

Superior border of Greater Trochanter of Femur

Question 18

Innervation of Piriformis

Answer 18

Branches of Anterior Rami S1 S2

Question 19

Actions of Piriformis

Answer 19

Laterally Rotate Extended Hip Joint
Abduct Flexed Hip Joint
Steady Femoral head in Acetabulum ( stabilizes hip joint)

Question 20

Origin of Obturator Internus

Answer 20

Pelvic surface of Ilium and Ischium

Obturator Membrane

Question 21

Insertion of Obturator Internus

Answer 21

Medial surface of Greater Trochanter of Femur

Question 22

Innervation of Obturator Internus

Answer 22

Nerve to Obturator Internus L5 S1

Question 23

Actions of Obturator Internus

Answer 23

Laterally Rotate Extended Hip Joint
Abduct Flexed Hip Joint
Steady Femoral head in Acetabulum ( stabilizes hip joint)

Question 24

Origin of Gemelli

Superior and Inferior

Answer 24

Superior- Ischial Spine

Inferior- Ischial Tuberosity

Question 25

Insertion of Gemelli

Answer 25

Medial surface of Greater Trochanter of Femur

Question 26

Innervation of Gemelli

Answer 26

Superior-Nerve to Obturator Internus L5 S1

Inferior- Nerve to Quadratus Femoris L5 S1

Question 27

Action of Gemelli

Answer 27

Laterally Rotate Extended Hip Joint
Abduct Flexed Hip Joint
Steady Femoral head in Acetabulum ( stabilizes hip joint)

Question 28

Origin of Quadratus Femoris

Answer 28

Lateral border of Ischial Tuberosity

Question 29

Insertion of Quadratus Femoris

Answer 29

Quadrate tubercle on Intertrochanteric crest of Femur and area inferior to it

Question 30

Innervation of Quadratus Femoris

Answer 30

Nerve to Quadratus Femoris L5 S1

Question 31

Action of Quadratus Femoris

Answer 31

Laterally Rotates Hip Joint

Pulls Femoral Head into Acetabulum to Stabilize Hip Joint/Pelvis