O & I: Anterior Compartment of Leg

Question 1

Origin: Tibialis Anterior

Answer 1

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

Question 2

Insertion: Tibialis Anterior

Answer 2

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

Question 3

Innervation: Tibialis Anterior

Answer 3

Deep Fibular N. (L4, L5)

Question 4

Action: Tibialis Anterior

Answer 4

Dorsiflexes ankle and inverts foot

Question 5

Origin: Extensor Digitorum Longus

Answer 5

lateral condyle of tibia and superior three quarters of medial surface of fibula and interosseous membrane

Question 6

Insertion: Extensor Digitorum Longus

Answer 6

middle and distal phlanges of lateral four digits

Question 7

Innervation: Extensor Digitorum Longus

Answer 7

Deep Fibular N. (L4, L5)

Question 8

Action: Extensor Digitorum Longus

Answer 8

extends lateral four digits and dorsiflexes ankle

Question 9

Origin: Extensor Hallucis Longus

Answer 9

middle part of anterior surface of fibula and interosseous membrane

Question 10

Insertion: Extensor Hallucis Longus

Answer 10

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

Question 11

Innervation: Extensor Hallucis Longus

Answer 11

Deep Fibular N. (L4, L5)

Question 12

Action: Extensor Hallucis Longus

Answer 12

extends great toe and dorsiflexes ankle

Question 13

Origin: Fibularis Tertius

Answer 13

inferior third of anterior surface of fibula and interosseous membrane

Question 14

Insertion: Fibularis Tertius

Answer 14

dorsum of base of 5th metatarsal

Question 15

Innervation: Fibularis Tertius

Answer 15

Deep Fibular N. (L4, L5)

Question 16

Function: Fibularis Tertius

Answer 16

dorsiflexes ankle and aids in eversion of foot