The soleus is a powerful muscle in the back of the lower leg, primarily responsible for plantarflexion of the foot at the ankle. It plays a crucial role in maintaining posture by preventing the body from falling forward when standing and aids in walking, running, and jumping.
The name "soleus" is derived from the Latin word "solea," meaning "sandal" or "sole," reflecting its flat, broad shape.
Without the soleus, the body would struggle significantly with walking and maintaining balance, as it provides essential support and propulsion during locomotion and helps stabilize the body in an upright position.
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