Muscles of Ant and Lat Compartments of Leg

Question 0

extensor hallicis longus

Answer 0

O: middle part of ant surface of fibula and inteross membrane
I: dorsal aspect of base of distal phalanx of great toe
N: deep fibular nerve L5, S1
A: extends great toe, dorsiflexes ankle

Question 1

tibialis anterior

Answer 1

O: lat condyle and sup 1/2 of lat surface of tibia and interosseous
membrane
I: med and inf surfaces of med cuneiform and base of 1st
metatarsal
N: deep fibular nerve L4, L5
A: dorsiflexes ankle, inverts foot, supports med longitudinal arch
of foot

Question 2

extensor digitorum longus

Answer 2

O: lat condyle of tibia, sup 3/4 of ant surface of interosseous
membrane
I: middle and distal phalanges of lateral 4 digits
N: deep fibular nerve L5, S1
A: extends lateral 4 digits, dorsiflexes ankle

Question 3

fibularis tertius

Answer 3

O: inf 1/3 of ant surface of fibula and interosseous membrane
I: dorsum of base of 5th metatarsal
N: deep fibular nerve L5, S1
A: dorsiflexes ankle, aids in eversion of foot

Question 4

fibularis longus

Answer 4

O: head and sup 2/3 of lat surface of fibula
I: base of 1st metatarsal and med cuneiform
N: superficial fibular nerve L5, S1, S2
A: evert foot, weakly plantar flexes ankle, supports transverse
arch of foot

Question 5

fibularis brevis

Answer 5

O: inf 2/3 of lat surface of fibula
I: dorsal surface of tuberosity of base of 5th metatarsal
N: superficial fibular nerve L5, S1, S2
A: everts foot