Muscles that Act on the Leg and Foot OIAs

Question 1

tibialis anterior

Answer 1

O: lateral condyle of tibia and interosseous membrane
I: medial surface of 1st cuneiform and 1st metatarsal
A: dorsiflexes and inverts foot

Question 2

extensor hallucis longus

Answer 2

O: fibula and interosseous membrane
I: dorsal surface of great toe
A: dorsiflexes and inverts foot and extends great toe

Question 3

extensor digitorum longus

Answer 3

O: lateral condyle of tibia, fibula, and interosseous membrane
I: dorsal surface of phalanges 2-5
A: dorsiflexes and everts foot an extends toe 2-5

Question 4

peroneus (fibularis) longus

Answer 4

O:
I:
A: plantar flexes and everts foot

Question 5

soleus

Answer 5

O: posterior proximal surface of fibula and tibia
I: calcaneus
A: plantar flexes foot

Question 6

flexor hallucis longus

Answer 6

O: posterior surface of fibula
I: plantar surface of distal phalanx of great toe
A: flexes great toe, plantar flexes, and inverts foot

Question 7

Flexor digitorum longus

Answer 7

O: posterior surface of tibia
I: plantar surface of distal phalanges of toes 2-5
A: flexes toes 2-5, plantar flexes, and inverts foot

Question 8

tibialis posterior

Answer 8

O: posterior surface of interosseous membrane, tibia, and fibula
I: plantar surfaces of navicular and adjacent bones of medial arch
A: plantar flexes and inverts foot