Anterior Crural Muscles

Question 1

Extensor digitorum longus - Attachments

Answer 1

FROM:
*lateral tibial condyle
*proximal 3/4th of the fibula
*crural interosseous membrane

TO:
*dorsal digital expansions of toes 2-5

Question 2

Extensor digitorum longus - Action

Answer 2

dorsiflexes ankle, and extends digits 2-5 (IP & MP)

Question 3

Extensor digitorum longus - Innervation

Answer 3

deep fibular nerve (L4-S1)

Question 4

Extensor hallucis longus - Attachments

Answer 4

FROM:
*middle 1/2 of the fibular surface
*crural interosseous membrane

TO:
*distal phalangeal base of the 1st toe

Question 5

Extensor hallucis longus - Actions

Answer 5

dorsiflexes ankle, and extends great toe (MP & IP)

Question 6

Extensor hallucis longus - Innervation

Answer 6

deep fibular nerve (L4-S1)

Question 7

Fibularis (peroneus) tertius - Attachments

Answer 7

FROM:
*distal fibula
*crural interosseous membrane

TO:
*base of the 5th metatarsal

Question 8

Fibularis (peroneus) tertius - Actions

Answer 8

dorsiflexes ankle, and everts foot

Question 9

Fibularis (peroneus) tertius - Innervation

Answer 9

deep fibular nerve (L4-S1)

Question 10

Tibialis anterior - Attachments

Answer 10

FROM:
*lateral condyle
*proximal 2/3rds of the tibia’s lateral surface
*crural interosseous membrane

TO:
*medial cuneiform & adjacent 1st metatarsal

Question 11

Tibialis anterior - Actions

Answer 11

dorsiflexes ankle, and inverts foot

Question 12

Tibialis anterior - Innervation

Answer 12

deep fibular nerve (L4-S1)