Anterior and Lateral Compartments of Leg Muscles

Question 0

Tibialis Anterior Insertion

Answer 0

1. Medial and inferior surfaces of medial cuneiform

2. Base of 1st metatarsal

Question 1

Tibialis Anterior Origin

Answer 1

1. Lateral condyle
2. Superior half of lateral surface of tibia
3. Interosseous membrane

Question 2

Tibialis Anterior Innervation

Answer 2

Deep Fibular Nerve (L4, L5)

Question 3

Tibialis Anterior Action

Answer 3

Dorsiflexes ankle;
Inverts foot;
Supports medial longitudinal arch of foot

Question 4

Extensor Hallucis Longus (EHL) Origin

Answer 4

Middle part of anterior surface of fibula and interosseous membrane

Question 5

Extensor Hallucis Longus Insertion

Answer 5

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

Question 6

Extensor Hallucis Longus Innervation

Answer 6

Deep Fibular Nerve (L5, S1)

Question 7

Extensor Hallucis Longus Action

Answer 7

Extends great toe;

Dorsiflexes ankle

Question 8

Extensor Digitorum Longus (EDL) Origin

Answer 8

1. lateral condyle of tibia

2. superior 3/4 of anterior surface of interosseous membrane

Question 9

Extensor Digitorum Longus Insertion

Answer 9

Middle and distal phalanges of lateral four digits

Question 10

Extensor Digitorum Longus Innervation

Answer 10

Deep Fibular Nerve (L5, S1)

Question 11

Extensor Digitorum Longus Action

Answer 11

Extends lateral four digits;

Dorsiflexes ankle

Question 12

Fibularis Tertius Origin

Answer 12

Inferior 1/3 of anterior surface of fibula and interosseous membrane

Question 13

Fibularis Tertius Insertion

Answer 13

Dorsum of base of 5th metatarsal

Question 14

Fibularis Tertius Innervation

Answer 14

Deep Fibular Nerve (L5, S1)

Question 15

Fibularis Tertius Action

Answer 15

Dorsiflexes ankle;

Aids in eversion of foot

Question 16

Fibularis Longus Origin

Answer 16

Head and superior 2/3 of lateral surface of fibula

Question 17

Fibularis Longus Insertion

Answer 17

Base of 1st metatarsal and medial cuneiform

Question 18

Fibularis Longus Innervation

Answer 18

Superficial Fibular Nerve (L5, S1, S2)

Question 19

Fibularis Longus Action

Answer 19

Evert foot;
Weaky plantarflex ankle;
Supports transverse arch of foot

Question 21

Fibularis Brevis Origin

Answer 21

Inferior 2/3 of lateral surface of fibula

Question 22

Fibularis Brevis Insertion

Answer 22

Dorsal surface of tuberosity of base of 5th metatarsal

Question 23

Fibularis Brevis Innervation

Answer 23

Superficial Fibular Nerve (L5, S1, S2)