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  4. Which of the following statements is correct for the 'Nodes of Ranvier' in nerves?

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Q. Which of the following statements is correct for the 'Nodes of Ranvier' in nerves?

NTA AbhyasNTA Abhyas 2022

Solution:

Neurons are the chief functional units of the nervous system. An ordinary neuron has a soma or cyton and a long thread called axon which is enclosed in a multilayered myelin sheath made by Schwann cells. The myelin sheath is interrupted at the spaces between Schwann cells to form gaps. These gaps are called Nodes of Ranvier. These nodes and the myelin sheath create a condition that speeds up the nerve impulses.