Anterior Leg Muscles

Question 1

Tibialis anterior origin

Answer 1

Lateral surface of tibia and adjacent interosseous membrane

Question 2

Tibialis anterior insertion

Answer 2

Medial and inferior surfaces of medial cuneiform and adjacent surfaces on base of metatarsal I

Question 3

Tibialis anterior innervation

Answer 3

Deep fibular nerve (L4-L5)

Question 4

Tibialis anterior function

Answer 4

Dorsiflexion of foot at ankle joint, inversion of foot, support of medial arch of foot

Question 5

Extensor hallucis longus origin

Answer 5

Middle one half of medial surface of fibula and adjacent surface of interosseous membrane

Question 6

Extensor hallucis longus insertion

Answer 6

Dorsal surface of base of distal phalanx of great toe

Question 7

Extensor hallucis longus innervation

Answer 7

Deep fibular nerve (L5, S1)

Question 8

Extensor hallucis longus function

Answer 8

Extension of great toe and dorsiflexion of foot

Question 9

Extensor digitorium longus origin

Answer 9

Proximal one half of medial surface of fibula and related surface of lateral tibial condyle

Question 10

Extensor digitorium longus insertion

Answer 10

Via dorsal digital expansions into bases of distal and middle phalanges of lateral four toes

Question 11

Extensor digitorium longus innervation

Answer 11

Deep fibular nerve (L5, S1)

Question 12

Extensor digitorium longus function

Answer 12

Extension of lateral four toes and dorsiflexion of foot

Question 13

Fibularis tertius origin

Answer 13

Distal part of medial surface of fibula

Question 14

Fibularis tertius insertion

Answer 14

Dorsomedial surface of base of metatarsal V

Question 15

Fibularis tertius innervation

Answer 15

Deep fibular nerve (L5, S1)

Question 16

Fibularis tertius function

Answer 16

Dorsiflexion and eversion of foot