MSK Session 10

Question 1

Which muscles form the lateral compartment of the leg?

Answer 1

Fibularis longus

Fibularis brevis

Question 2

Which nerve innervates the anterior leg muscles?

Answer 2

Deep fibular

Question 3

What are the nerve roots of the deep fibular nerve?

Answer 3

L4 and L5

Question 4

What is the main action of tibialis anterior?

Answer 4

Dorsiflex ankle

Invert foot

Question 5

What is the main action of extensor digitorum longus?

Answer 5

Extends lateral 4 digits

Dorsiflexors ankle

Question 6

What is the main function of extensor hallucis longus?

Answer 6

Extend great toe

Dorsiflex ankle

Question 7

What is the main action of fibularis tertius?

Answer 7

Dorsiflex ankle

Aid in eversion of the foot

Question 8

What is the main action of fibularis longus?

Answer 8

Evert foot

Weakly plantarflex ankle

Question 9

What is the main action of fibularis brevis?

Answer 9

Evert foot

Weakly plantarflex ankle

Question 10

Which nerve innervates the muscles of the lateral compartment of the leg?

Answer 10

Superficial fibular nerve

Question 11

What are the nerve roots of the superficial fibular nerve?

Answer 11

L5, S1 and S2

Question 12

Describe the path of the great saphenous vein.

Answer 12

Ascends anterior to medial malleolus
Passes posterior to medial condyle of femur
Empties into femoral vein

Question 13

Describe the path of the small saphenous vein.

Answer 13

Ascends posterior to lateral malleolus
Inclines to midline of the fibula and penetrates deep fascia
Ascends b/w heads of gastrocnemius
Empties into popliteal vein in popliteal fossa

Question 14

Describe how the femoral artery branches as it passes inferiorly.

Answer 14

Femoral artery –> popliteal artery –> anterior tibial –> fibular and posterior tibial –> medial and lateral plantar arteries from posterior tibial, dorsalis pedis from anterior tibial

Question 15

From which vein does the profunda femoris vein branch off from?

Answer 15

Femoral

Question 16

What does the femoral vein become when it passes deep to the inguinal ligament?

Answer 16

External iliac vein

Question 17

Which veins supply the knee joint?

Answer 17

Genicular

Question 18

What gives rise to the dorsal venous arch?

Answer 18

Anterior tibial vein

Question 19

What gives rise to the plantar arch?

Answer 19

Fibular and posterior tibial vein

Question 20

Describe the path of the femoral vein as it moves inferiorly in the posterior leg.

Answer 20

Femoral vein –> popliteal vein –> fibular vein and posterior tibial vein –> plantar arch

Question 21

Which are the superficial veins of the lower limb?

Answer 21

Great and small saphenous veins

Question 22

Which are the deep veins of the lower limb?

Answer 22

Profunda femoris
Femoral 
Popliteal
Fibular
Posterior and anterior tibial
Dorsal and plantar arches

Question 23

Which muscles make up the anterior compartment of the leg?

Answer 23

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis tertius