Module 1 Muscles

Question 1

Tibialis Anterior o/i

Answer 1

O: lateral condyle of tibia and the proximal lateral surface of the tibia and the interosseous membrane

I: medial cuneiform and the base of the first metatarsal

Question 2

Tibialis Anterior actions

Answer 2

Dorsiflexes the ankle at the talocrural joint

Inverts the foot

Question 3

Tibialis Anterior nerve

Answer 3

Deep Fibular nerve L4, L5, S1

Question 4

Extensor Digitorum Longus o/i

Answer 4

O: lateral condyle of tibia, proximal anterior shaft of fibula and interosseous membrane

I: middle and distal phalanges of 2nd through 5th toes

Question 5

Extensor Digitorum Longus actions

Answer 5

Dorsiflexes the ankle at the talocrural joint

Everts the foot

Extends the 2nd through 5th toes at the metatarsophalangeal and interphalangeal joints

Question 6

Extensor Digitorum Longus Nerve

Answer 6

Deep fibular nerve L4,L5,S1

Question 7

Fibularis Longus o/i

Answer 7

O: head of the fibula and proximal 2/3rds of lateral fibula

I: medial cuneiform and the base of the first metatarsal

Question 8

Fibularis Longus actions

Answer 8

Everts the foot

Assists to plantarflex the ankle at the talocrural joint

Question 9

Fibularis Longus nerve

Answer 9

Superficial fibular nerve L4,L5,S1

Question 10

Gastrocnemius o/i

Answer 10

O: posterior surfaces of the medial and lateral condyles of the femur

I: posterior surface of the calcaneus (via the calcaneal tendon)

Question 11

Gastrocnemius Actions

Answer 11

Plantarflexes the ankle at the talocrural joint

Flexes the knee at the tibiofemoral joint

Question 12

Gastrocnemius nerve

Answer 12

Tibial nerve S1, S2

Question 13

Soleus o/i

Answer 13

O: proximal posterior surface of tibia and posterior aspect of head of fibula

I: posterior surface of the calcaneus via the calcaneal tendon

Question 14

Soleus actions

Answer 14

Plantar flexes the ankle at the talocrural joint

Question 15

Soleus nerve

Answer 15

Tibial nerve L5, S1, S2