This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'The node of Ranvier is seen in - \nSelect and explain. \nA. Cell body, B. Dendrites, C. Axons, D. Terminalbutons', 'role': 'user'}, {'content': "Answer: C \nExplanation: Nodes of Ranvier are periodic gaps in the myelin sheath on the axon.\nA neuron is a functional unit (the basic unit of nervous tissue).\nIt is specialized for the function of reception, integration and transmission of information in the body,\nThe basic structure of a neuron is best studied in a spinal motor neuron,\nThis cell has a ‘cell body (soma)' with 5-7 small processes called ‘dendrites'.\nThere is a long process called ‘axon’ that originate from “axon hillock (A thickened area of cell body from which axon originates)”.\nThe first portion of the axon is called “initial segment”.\nIn a motor neuron, the axon hillock and the initial segment of axon have the lowest threshold for excited", 'role': 'assistant'}]