Muscles of the Leg and Foot

Question 1

What is the origin of the tibialis anterior?

Answer 1

lateral condyle and proximal tibia, interoseous membrane

Question 2

What is the origin of the extensor digitorum longus?

Answer 2

lateral condyle tibia, anterior fibula, interosseous membrane

Question 3

What is the origin of the extensor hallucis longus?

Answer 3

anterior fibula, interosseous membrane

Question 4

What is the origin of the fibular tertius?

Answer 4

distal fibula, interosseous membrane

Question 5

What is the insertion of the tibialis anterior?

Answer 5

1st (medial) cuneiform, metatarsal 1

Question 6

What is the insertion of the extensor digitorum longus?

Answer 6

distal phalanges digits 2-5, dorsal surface

Question 7

What is the insertion of the extensor hallucis longus?

Answer 7

distal phalanx of hallux, dorsal surface

Question 8

What is the insertion of the fibularis tertius?

Answer 8

base of metarsal 5

Question 9

What is the action of the tibialis anterior?

Answer 9

dorsiflex and invert foot

Question 10

What is the action of the extensor digitorum longus?

Answer 10

extend digits #2-5, dorsiflex foot

Question 11

What is the action of the extensor hallucis longus?

Answer 11

extend hallux; dorsiflex foot

Question 12

What is the action of the fibularis tertius?

Answer 12

dorsiflex foot and evert foot

Question 13

What nerve innervates the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and the fibularis tertius?

Answer 13

deep fibular (peroneal) nerve