Muscles of the Posterior Leg- Deep Layer

Question 1

Popliteus

Answer 1

origin: lateral femoral condyle
insertion: tibia
innervation: tibial N.
action: flexion of the knee (weak), medial rotation of the tibia or lateral rotation of the femur (unlocking the knee)

Question 2

Flexor Hallucis Longus

Answer 2

origin: fibula, interosseous membrane and tibia
insertion: distal phlanx of great toe
inervation: tibial N.
action: flexion of the great toe, plantarflexion of the foot, inversion of the foot

Question 3

Flexor Digitorum Longus

Answer 3

origin: fibula, interosseous membrane and tibia
insertion: distal phalanx of digits 2-5
innervation: tibial N.
action: flexion of digits 2-5, plantarflexion of foot, inversion of the foot

Question 4

Tibialis Posterior

Answer 4

origin: fibula, interosseous membrane, and tibia
insertion: navicular and medial cuneiform
innervation: tibial N.
action: plantarflexion of the foot, inversion of the foot, dynamic support of teh arches