<Tr> <Td_colspan="2"> Anatomical terms of muscle (edit on Wikidata) </Td> </Tr> <P> In humans, the gastrocnemius muscle (/ ˌɡæstrɒkˈniːmiəs / or / ˌɡæstrəkˈniːmiəs /; plural gastrocnemii; Latin, from Greek γαστήρ "stomach" and κνήμη (knḗmē) "leg"; meaning "stomach of leg" (referring to the bulging shape of the calf) is a very powerful superficial bipennate muscle that is in the back part of the lower leg . It runs from its two heads just above the knee to the heel, a two joint muscle . </P> <P> The gastrocnemius is located with the soleus in the posterior (back) compartment of the leg . The lateral head originates from the lateral condyle of the femur, while the medial head originates from the medial condyle of the femur . Its other end forms a common tendon with the soleus muscle; this tendon is known as the calcaneal tendon or Achilles Tendon and inserts onto the posterior surface of the calcaneus, or heel bone . </P> <P> Deep to the gastrocnemius (farther from the skin) is the soleus muscle . Some anatomists consider both to be a single muscle, the triceps surae or "three - headed (muscle) of the calf", since they share a common insertion via the Achilles tendon . The plantaris muscle and a portion of its tendon run between the two muscles, which is involved in "locking" the knee from the standing position . Since the anterior compartment of the leg is lateral to the tibia, the bulge of muscle medial to the tibia on the anterior side is actually the posterior compartment . The soleus is superficial to the mid-shaft of the tibia . </P>

Where is the soleus located in the body