Posterior Leg and Plantar Foot

Question 1

What are the two parts of gastrocnemius muscle?

Answer 1

medial head and lateral head

Question 2

Where does the medial head of gastrocnemius originate?

Answer 2

medial condyle of femur

Question 3

Where does the lateral head of gastrocnemius originate?

Answer 3

lateral condyle of femur

Question 4

Where do both heads of gastrocnemius insert?

Answer 4

calcaneus via the achilles (calcaneal) tendon

Question 5

What innervates gastrocnemius?

Answer 5

Tibial N.

Question 6

What are the actions of gastrocnemius?

Answer 6

flexion of knee

plantarflexion of foot

Question 7

Where does plantaris originate?

Answer 7

lateral condyle of femur and joint capsule

Question 8

Where does plantaris insert?

Answer 8

calcaneus via the achilles (calcaneal) tendon

Question 9

What innervates plantaris?

Answer 9

Tibial N.

Question 10

What are the actions of plantaris?

Answer 10

weakly flexes the knee

plantarflexion

Question 11

Where does the soleus muscle originate?

Answer 11

solaeal line of tibia, interosseous membrane and fibula

Question 12

Where does the soleus muscle insert?

Answer 12

Calcaneus via the Achilles (calcaneal) tendon

Question 13

What innervates the soleus muscle?

Answer 13

Tibial N.

Question 14

What are the actions of the soleus muscle?

Answer 14

Plantarflexion of foot

Question 15

Where does the popliteus muscle orignate?

Answer 15

lateral femoral condyle

Question 16

Where does the popliteus muscle insert?

Answer 16

Tibia

Question 17

What innervates popliteus?

Answer 17

Tibial N.

Question 18

What are the actions of popliteus?

Answer 18

Weak flexion of the knee

Medial rotation of the tibia or lateral rotation of femur (unlocking the knee)

Question 19

Where does flexor hallucis longus originate?

Answer 19

fibula, interosseous membrane and tibia

Question 20

Where does flexor hallucis longus insert?

Answer 20

distal phalanx of the great toe

Question 21

What innervates flexor hallucis longus?

Answer 21

Tibial N.

Question 22

What are the actions of flexor hallucis longus?

Answer 22

flexion of the great toe
plantarflexion of the foot
inversion of the foot

Question 23

Where does flexor digitorum longus orginate?

Answer 23

Fibula, interosseous membrane and tibia

Question 24

Where does flexor digitorum longus insert?

Answer 24

distal phalanx of digits 2-5

Question 25

What innervates flexor digitorum longus?

Answer 25

Tibial N.

Question 26

What are the actions of flexor digitorum longus?

Answer 26

Flexion of Digits 2-5
Plantarflexion of foot
inversion of foot

Question 27

Where does tibialis posterior insert?

Answer 27

navicular and medial cuneiform

Question 28

Where does tibialis posterior originate?

Answer 28

fibula, interosseous membrane and tibia

Question 29

What innervates tibialis posterior?

Answer 29

Tibial N.

Question 30

What are the actions of tibialis posterior?

Answer 30

Plantarflexion of foot
inversion of foot
dynamic support of arches