Lower Extremity 2 - Gluteal, Posterior Thigh and Leg

Question 1

Muscles of the Gluteal Region

Answer 1

Gluteus maximus
Gluteus medius
Gluteus minimus
Tensor fascia lata

Question 2

Origin and Insertion of Gluteus maximus?

Answer 2

O - ilium, sacrum, coccyx

I - iliotibial tract, femur

Question 3

Action and Innervation of Gluteus Maximus?

Answer 3

Action - Extends and laterally rotates thigh

Innervation - Gluteal nerve

Question 4

Origin and insertion of Gluteus medius?

Answer 4

O - ilium

I - greater trochanter of femur

Question 5

Action and Innervation of Gluteus medius?

Answer 5

Action - abducts and medially rotates thigh

Innervation - Gluteal nerve

Question 6

Origin and insertion of Gluteus minimus?

Answer 6

O - ilium

I - greater trochanter of femur

Question 7

Action and Innervation of Gluteus minimus?

Answer 7

Action - abducts and medially rotates thigh

Innervation - gluteal nerve

Question 8

Origin and Insertion of tensor fascia lata?

Answer 8

O - ilium

I - iliotibial tract

Question 9

Action and Innervation of tensor fascia lata?

Answer 9

Action - stabilizes knee

Innervation - gluteal nerve

Question 10

Muscles of the thigh (posterior compartment)

Answer 10

Semitendonosus
Semimebranosus
Biceps femoris

Question 11

Origin and Insertion of Semitendonosus?

Answer 11

O - ischial tuberosity

I - tibia

Question 12

Action and innervation of Semitendonosus?

Answer 12

A - Extends thigh, medially rotates and flexes leg

I - Sciatic nerve

Question 13

Origin and Insertion of Semimembranosus?

Answer 13

O - ischial tuberosity

I - tibia

Question 14

Action and Innervation of Semimembranosus?

Answer 14

A - extends thigh, medially rotates and flexes leg

I - sciatic nerve

Question 15

Origin and insertion of Biceps femoris?

Answer 15

O - Ischial tuberosity and femur

I - fibula

Question 16

Action and innervation of Biceps femoris?

Answer 16

A - extends thigh, laterally rotates and flexes leg

I - sciatic nerve

Question 17

Muscles of the leg and foot (posterior compartment)

Answer 17

Gastrocnemius
Soleus
Tibialis posterior
Plantaris
Flexor digitorum longus
Flexor hallucis longus
Popliteus

Question 18

Origin and Insertion of Gastrocnemius?

Answer 18

O - lateral and medial condyles of femur

I - Calcaneus

Question 19

Action and Innervation of Gastrocnemius?

Answer 19

A - plantar flexes foot

I - tibial nerve

Question 20

Origin and Insertion of Soleus?

Answer 20

O - tibia and fibula

I - calcaneus

Question 21

Action and Innervation of Soleus?

Answer 21

A - plantar flexes foot

I - tibial nerve

Question 22

Origin and Insertion of Tibialis posterior?

Answer 22

O - tibia, fibula, and interosseus membrane

I - tarsals (navicular and medial cuneiform)

Question 23

Action and Innervation of Tibialis posterior?

Answer 23

A - plantar flexes foot and inverts foot, arch support

I - tibial nerve

Question 24

Origin and Insertion of Plantaris?

Answer 24

O - femur

I - calcaneus

Question 25

Action and Innervation of Plantaris?

Answer 25

A - plantar flexes foot | I - tibial nerve

Question 26

Origin and Insertion of Flexor digitorum longus?

Answer 26

O - tibia | I - phalanges

Question 27

Action and Innervation of Flexor digitorum longus?

Answer 27

A - flexes phalanges | I - tibial nerve

Question 28

Origin and Insertion of Flexor hallucis longus?

Answer 28

O - fibula | I - hallux

Question 29

Action and Innervation of Flexor hallucis longus?

Answer 29

A - flexes hallux | I - tibial nerve

Question 30

Origin and Insertion of Popliteus?

Answer 30

O - tibia | I - lateral condyle of femur

Question 31

Action and Innervation of Popliteus?

Answer 31

A - rotates femur on tibia | I - tibial nerve