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.
what is the name of the main muscle that forms the calf
gastrocnemius muscle