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Question

Nodes of Ranvier are the:
  1. Gaps in the myelin sheath.
  2. Collection of nerves in the heart.
  3. Covering of the nerve fibre.
  4. Swelling along the nerve fibre.


Solution

The correct option is A Gaps in the myelin sheath.

The nodes of ranvier are the gaps between myelin sheath. These gaps (approximately 1μm in length) are generated by schwann cells. Electrical impulses transfer from these nodes.

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