Gastrocnemius muscle :-
Muscle details :-
a superficial two-headed muscle that is in the back part of the lower leg of humans .
superior to articular surfaces of lateral condyle of femur and medial condyle of femur .
tendo calcaneus (achilles tendon) into mid-posterior calcaneus .
tibial nerve from the sciatic, specifically, nerve roots S1–S2 .
plantar flexes foot, flexes knee .