Superficial Posterior Compartment of the Lower Leg

Question 1

Gastrocnmeius (origin)

Answer 1

posterior femur, just proximal to medial and lateral condyles

Question 2

Gastrocnmeius (insertion)

Answer 2

calcaneal tuberosity through achilles tendon

Question 3

Gastrocnmeius (action)

Answer 3

plantar flexes the ankle, flexes knee if in open chain

Question 4

Gastrocnmeius (innervation)

Answer 4

tibial nerve

Question 5

Gastrocnmeius (blood supply)

Answer 5

Medial head: medial sural artery
Lateral head: lateral sural artery

Question 6

Plantaris (origin)

Answer 6

lateral femoral epicondyle

Question 7

Plantaris (insertion)

Answer 7

calcaneus anteromedial to the calcaneal tendon

Question 8

Plantaris (action)

Answer 8

weak plantar flexion of ankle, weak flexion of knee if in open chain

Question 9

Plantaris (innervation)

Answer 9

tibial nerve

Question 10

Plantaris (blood supply)

Answer 10

Superficial: lateral sural artery
Deep: superior lateral genicular artery

Question 11

Soleus (origin)

Answer 11

soleal line of tibia, posterior surface of the upper 1/3 of tibia, proximal 1/3 of fibula

Question 12

Soleus (insertion)

Answer 12

calcaneous through achilles tendon

Question 13

Soleus (action)

Answer 13

plantar flexion of ankle

Question 14

Soleus (innervation)

Answer 14

tibial nerve

Question 15

Soleus (blood supply)

Answer 15

popliteal artery, posterior tibial artery, peroneal artery