test 4 anterior/lateral leg

Question 1

Tibialis anterior (TA) origin

Answer 1

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

Question 2

Tibialis anterior (TA) insertion

Answer 2

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

Question 3

Tibialis anterior (TA) innervation

Answer 3

Deep fibular nerve (L4, L5)

Question 4

Tibialis anterior (TA) action

Answer 4

Dorsiflexes ankle; inverts foot; supports medial longitudinal arch of foot

Question 5

Extensor hallucis longus (EHL) origin

Answer 5

Middle part of anterior surface of fibula and interosseous membrane

Question 6

Extensor hallucis longus (EHL) insertion

Answer 6

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

Question 7

Extensor hallucis longus (EHL) innervation

Answer 7

Deep fibular nerve (L5, S1)

Question 8

Extensor hallucis longus (EHL) action

Answer 8

Extends great toe; dorsiflexes ankle

Question 9

Extensor digitorum longus (EDL) origin

Answer 9

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

Question 10

Extensor digitorum longus (EDL) insertion

Answer 10

Middle and distal phalanges of lateral four digits

Question 11

Extensor digitorum longus (EDL) innervation

Answer 11

Deep fibular nerve (L5, S1)

Question 12

Extensor digitorum longus (EDL) action

Answer 12

Extends lateral four digits; dorsiflexes ankle

Question 13

Fibularis tertius origin

Answer 13

Inferior third of anterior surface of fibula and interosseous membrane

Question 14

Fibularis tertius insertion

Answer 14

Dorsum of base of 5th metatarsal

Question 15

Fibularis tertius innervation

Answer 15

Deep fibular nerve (L5, S1)

Question 16

Fibularis tertius action

Answer 16

Dorsiflexes ankle; aids in eversion of foot

Question 17

Fibularis longus (FL) origin

Answer 17

Head and superior two thirds of lateral surface of fibula

Question 18

Fibularis longus (FL) insertion

Answer 18

Base of 1st metatarsal and medial cuneiform

Question 19

Fibularis longus (FL) innervation

Answer 19

Superficial fibular nerve (L5, S1, S2

Question 20

Fibularis longus (FL) action

Answer 20

Evert foot; weakly plantarflex ankle. FL supports transverse arch of foot

Question 21

Fibularis brevis (FB) origin

Answer 21

Inferior two thirds of lateral surface of fibula

Question 22

Fibularis brevis (FB) insertion

Answer 22

Dorsal surface of tuberosity of base of 5th metatarsal

Question 23

Fibularis brevis (FB) innervation

Answer 23

Superficial fibular nerve (L5, S1, S2)

Question 24

Fibularis brevis (FB) axtion

Answer 24

Evert foot; weakly plantarflex ankle.

Question 25

anterior compartment muscles

Answer 25

• tibialis anterioir
• extensor hallucis longus
• extensor digitorum longus
• fibularis longus

Question 26

lateral compartment muscles

Answer 26

• fibularis longus

- fibularis brevis