Superficial Group Of Muscles In The Posterior Compartment Of Lower Leg

Question 1

What are the 3 superficial muscles of the posterior lower leg?

Answer 1

• Gastrocnemius
• Plantaris
• Soleus

Question 2

What is the origin of the Gastrocnemius?

Answer 2

Medial head- posterior surface of distal femur just superior to medial condyle, lateral head- upper posterolateral surface of lateral femoral condyle

Question 3

What is the insertion of the Gastrocnemius?

Answer 3

Via calcaneal tendon, to posterior surface of calcaneous

Question 4

What is the innervation of the Gastrocnemius?

Answer 4

Tibial Nerve ( S1, S2 )

Question 5

What is the function of the Gastrocnemius?

Answer 5

Plantarflexes foot and flexes knee

Question 6

What is the origin of the Plantaris?

Answer 6

Inferior part of lateral supracondylar line of femur and oblique popliteal ligament of knee

Question 7

What is the insertion of the Plantaris?

Answer 7

Via calcaneal tendon, to posterior surface of calcaneus

Question 8

What is the innervation of the Plantaris?

Answer 8

Tibial Nerve ( S1,S2 )

Question 9

What is the function of the Plantaris?

Answer 9

Plantarflexes foot and flexes knee

Question 10

What is the origin of the Soleus?

Answer 10

Soleal line and medial border of tibia; posterior aspect of fibular head and adjacent surfaces of neck and proximal shaft; tendinous arch between tibial and fibular attachments

Question 11

What is the insertion of the Soleus?

Answer 11

Via calcaneal tendon, to posterior surface of calcaneus

Question 12

What is the innervation of the Soleus?

Answer 12

Tibial Nerve ( S1,S2 )

Question 13

What is the function of the Soleus?

Answer 13

Plantarflexes the foot