This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
[{'content': 'Which muscle is called the Peripheral hea of body? \nSelect and explain. \nA. Gastronemius, B. Soleus, C. Gracilis, D. Tibialis Posterior', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In an upright posture, the soleus is responsible for pumping venous blood back into the hea from the periphery and is often called the skeletal-muscle pump, peripheral hea or the sural (tricipital) pump. Soleus muscles have a higher propoion of slow muscle fibers than many other musclesReference: Chaurasia Volume II; 7th edition; Page no: 116', 'role': 'assistant'}]