gluteal muscles

Question 1

gluteus muscles action

Answer 1

extend, abduct and laterally rotate

Question 2

superior fibers of gluteus maximus

Answer 2

abduct femur at hip joint

Question 3

inferior fibers of gluteus maximus

Answer 3

adduct @ hip joint

Question 4

gluteus maximus origin

Answer 4

dorsal surface of sacrum, gluteal surface of ilium, thoracolumbar fascia, sacrotuberous ligament

Question 5

superior fibers insertion

Answer 5

iliotibial tract

Question 6

inferior fibers insertion

Answer 6

gluteal tuberosity

Question 7

gluteus maximus innervation

Answer 7

inferior gluteal nerve (L5 to S2)

Question 8

gluteus medius origin

Answer 8

originates from the gluteal surface of the ilium below the iliac crest between the anterior and posterior gluteal line

Question 9

gluteus medius insertion

Answer 9

inserts onto the lateral surface of the greater trochanter of the femur

Question 10

gluteus medius innervation

Answer 10

Superior gluteal nerve (L4 to S1)

Question 11

gluteus medius action

Answer 11

• abduct the femur at the hip joint
  
  • stabilize the pelvis in the coronal plane.
  • anterior fibers act to flex and internally rotate the femur at the hip joint
  • posterior fibers act to extend and externally rotate the femur at the hip joint

Question 12

piriformis action

Answer 12

• externally rotate,
• abduct femur at hip joint
• extend femur at the hip joint.
• stabilize the hip joint.

Question 13

Identify superior gluteal vessels and nerve

Answer 13

emerging from the pelvis superior to the piriformis

Question 14

identify inferior gluteal vessels and nerve

Answer 14

emerging from the pelvis inferior to piriformis

Question 15

Identify large sciatic nerve

Answer 15

emerging from the pelvis inferior to the piriformis

Question 16

Identify the posterior femoral cutaneous nerve

Answer 16

emerging from the pelvis inferior to the piriformis, medial to the sciatic nerve

Question 17

obturator internus innervation

Answer 17

Sacral plexus (L5, S1)

Question 18

obturator internus action

Answer 18

• externally rotate
• extend the femur at the hip joint
• abduct or adduct the femur at the hip joint

Question 19

Identify the superior and the inferior gemelli

Answer 19

• together with the obturator internus, form the triceps coxae
• all three are attached to the tendon of the obturator internus, which connects them to the greater trochanter of the femur.

Question 20

quadratus femoris origin

Answer 20

originates from the lateral border of the ischial tuberosity and inserts onto the intertrochanteric crest of the femur

Question 21

quadratus femoris innervation

Answer 21

Sacral plexus (L5, S1)

Question 22

gluteus minimus origin

Answer 22

originates from the gluteal surface of the ilium just below the origin of the gluteus medius

Question 23

gluteus minimus innervation

Answer 23

Superior gluteal nerve (L4 to S1)

Question 24

gluteus minims action

Answer 24

• abduct the femur at the hip joint
• stabilize the pelvis in the coronal plane
• the anterior fibers act to flex and internally rotate the femur at the hip joint
• posterior fibers act to extend and externally rotate the femur at the hip joint