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soleus vs. gastrocnemius

soleus
[soh-lee-uhs] / ˈsoʊ li əs /

noun

solei, plural soleuses plural

  1. a muscle in the calf of the leg, behind the gastrocnemius muscle, that helps extend the foot forward.

gastrocnemius
[gas-trok-nee-mee-uhs, gas-truh-nee-] / ˌgæs trɒkˈni mi əs, ˌgæs trəˈni- /

noun

Anatomy.
gastrocnemii plural

  1. the largest muscle in the calf of the leg, the action of which extends the foot, raises the heel, and assists in bending the knee.