superficial posterior leg compartment

Question 1

What is the origin, insertion, innervation, and function of Gastrocnemius

Answer 1

i. Origin: condyles of femur
ii. Insert: calcaneus (achilles tendon)
iii. Nerve: tibial nerve
iv. Action: flexes knee, plantar flexion of ankle/foot
v. Forms the calf; has a medial and lateral head

Question 2

What is the origin, insertion, innervation and function of the Soleus

Answer 2

i. Origin: tibia
ii. Insert: calcaneus
iii. Nerve: tibial nerve
iv. Action: plantar flexion at foot only

Question 3

What is the origin, insertion, innervation and function of the Plantaris (superficial posterior)

Answer 3

i. Origin: lateral, distal femur
ii. Insert: tendon inserts on calcaneus; (achilles tendon)
iii. Nerve: tibial nerve
iv. Action: flex knee, plantar flexion at ankle/foot