5.2 Anatomy of the Muscular System Part 6

Question 1

What is hip flexion?

Answer 1

movign the thigh anteriorly

Question 2

What is knee extension?

Answer 2

straighening the knee/increasing the angle of the joint

Question 3

What is knee flexion?

Answer 3

bending the knee/decreasing the angle of the joint

Question 4

What is lateral rotation?

Answer 4

rotation away from the body

Question 5

What is internal rotation?

Answer 5

rotation towards the central axis of the body

Question 6

What make up the iliopsoas group?

Answer 6

psoas major
iliacus

Question 7

What is the origin and insertion of the psoas major?

Answer 7

origin = transverse bodies of all lumbar vertebra
insertion = lessor trochanter of the femur

Question 8

What is the action of the psoas major?

Answer 8

hip flexion or trunk flexion if femur is stationary

Question 9

What is the innervation of the psoas major?

Answer 9

lumbar plexus

Question 10

What is the origin and insertion of the iliacus?

Answer 10

origin = iliac fossa of ilium
insertion = lesser trochanter of femur

Question 11

What is the action of the iliacus?

Answer 11

hip flexion

Question 12

What is the innervation of the iliacus?

Answer 12

femoral nerve

Question 13

What are the gluteal muscles of the thigh?

Answer 13

gluteus maximus
gluteus medius
gluteus minimus
tensor fascia latae

Question 14

What is the main purpose of the gluteal muscles?

Answer 14

extend and rotate the hip

Question 15

What does the hip refer to?

Answer 15

ball and socket joint

Question 16

What do thigh movements refer to?

Answer 16

movement of the femur

Question 17

What is the origin and insertion of the gluteus maximus?

Answer 17

origin = posterior gluteal line of ilium, lower sacrum, and side of coccyx
insertion = gluteal tuberosity

Question 18

What is the action of the gluteus maximus?

Answer 18

abducts, extends, and laterally rotates hip joint

Question 19

What is the innervation of the gluteus maximus?

Answer 19

inferior gluteal nerve

Question 20

What is the origin and insertion of the gluteus median?

Answer 20

origin = gluteal surface of the ilium
insertion = greater trochanter of the femur