MSK Session 10 Flashcards
Which muscles form the lateral compartment of the leg?
Fibularis longus
Fibularis brevis
Which nerve innervates the anterior leg muscles?
Deep fibular
What are the nerve roots of the deep fibular nerve?
L4 and L5
What is the main action of tibialis anterior?
Dorsiflex ankle
Invert foot
What is the main action of extensor digitorum longus?
Extends lateral 4 digits
Dorsiflexors ankle
What is the main function of extensor hallucis longus?
Extend great toe
Dorsiflex ankle
What is the main action of fibularis tertius?
Dorsiflex ankle
Aid in eversion of the foot
What is the main action of fibularis longus?
Evert foot
Weakly plantarflex ankle
What is the main action of fibularis brevis?
Evert foot
Weakly plantarflex ankle
Which nerve innervates the muscles of the lateral compartment of the leg?
Superficial fibular nerve
What are the nerve roots of the superficial fibular nerve?
L5, S1 and S2
Describe the path of the great saphenous vein.
Ascends anterior to medial malleolus
Passes posterior to medial condyle of femur
Empties into femoral vein
Describe the path of the small saphenous vein.
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
Describe how the femoral artery branches as it passes inferiorly.
Femoral artery –> popliteal artery –> anterior tibial –> fibular and posterior tibial –> medial and lateral plantar arteries from posterior tibial, dorsalis pedis from anterior tibial
From which vein does the profunda femoris vein branch off from?
Femoral
What does the femoral vein become when it passes deep to the inguinal ligament?
External iliac vein
Which veins supply the knee joint?
Genicular
What gives rise to the dorsal venous arch?
Anterior tibial vein
What gives rise to the plantar arch?
Fibular and posterior tibial vein
Describe the path of the femoral vein as it moves inferiorly in the posterior leg.
Femoral vein –> popliteal vein –> fibular vein and posterior tibial vein –> plantar arch
Which are the superficial veins of the lower limb?
Great and small saphenous veins
Which are the deep veins of the lower limb?
Profunda femoris Femoral Popliteal Fibular Posterior and anterior tibial Dorsal and plantar arches
Which muscles make up the anterior compartment of the leg?
Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis tertius
