Muscles Of The Anterior And Lateral Compartments Of The Leg

Question 0

Insertion of tibialis anterior

Answer 0

Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal

Question 1

Origin of the tibialis anterior

Answer 1

Lateral condyle and superior half of lateral surface of tibia and interosseous membrane

Question 2

Innervation of tibialis anterior

Answer 2

Deep fibular nerve (L4, L5)

Question 3

Actions of the tibialis anterior

Answer 3

Dorsiflexes ankle
Inverts foot
Supports medial longitudinal arch of foot

Question 4

Origin of extensor hallucis longus (EHL)

Answer 4

Middle part of anterior surface of fibula and interosseous membrane

Question 5

Insertion of the extensor hallucis longus (EHL)

Answer 5

Dorsal aspect of base of distal phalanx of great toe (hallux)

Question 6

Innervation of extensor hallucis longus (EHL)

Answer 6

Deep fibular nerve (L5, S1)

Question 7

Action of the extensor hallucis longus (EHL)

Answer 7

Extends great toe

Dorsiflexes ankle

Question 8

Origin of the extensor digitorum longus (EDL)

Answer 8

Lateral condyle of tibia and superior three fourths of anterior surface of interosseous membrane

Question 9

Insertion of extensor digitorum longus (EDL)

Answer 9

Middle and distal phalanges of lateral four digits

Question 10

Innervation of extensor digitorum longus (EDL)

Answer 10

Deep fibular nerve (L5, S1)

Question 11

Actions of extensor digitorum longus (EDL)

Answer 11

Extends lateral four digits

Dorsiflexes ankle

Question 12

Origin of the fibularis tertius

Answer 12

Inferior third of anterior surface of fibula and interosseous membrane

Question 13

Insertion of fibularis tertius

Answer 13

Dorsum of base of 5th metatarsal

Question 14

Innervation of fibularis tertius

Answer 14

Deep fibular nerve (L5, S1)

Question 15

Actions of the fibularis tertius

Answer 15

Dorsiflexes ankle

Aids in eversion of foot

Question 16

Origin of fibularis longus (FL)

Answer 16

Head and superior two thirds of lateral surface of fibula

Question 17

Insertion of fibularis longus (FL)

Answer 17

Base of 1st metatarsal and medial cuneiform

Question 18

Innervation of fibularis longus (FL)

Answer 18

Superficial fibular nerve (L5, S1, S2)

Question 19

Actions of fibularis longus (FL)

Answer 19

Evert foot
Weakly plantarflex ankle
Supports transverse arch of foot

Question 20

Origin of fibularis brevis (FB)

Answer 20

Inferior two thirds of lateral surface of fibula

Question 21

Insertion of fibularis brevis (FB)

Answer 21

Dorsal surface of tuberosity of base of 5th metatarsal

Question 22

Innervation of fibularis brevis (FB)

Answer 22

Superficial fibular nerve (L5, S1, S2)l

Question 23

Action of the fibularis brevis

Answer 23

Evert foot

Weakly plantarflex ankle