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  • Nodes of RanvierOption: 1 are enveloped with Schwann cellsOption: 2 Are

Nodes of Ranvier

Option: 1

are enveloped with Schwann cells


Option: 2

Are gaps between two adjacent myelin sheaths


Option: 3

form a myelin sheath around the axon.


Option: 4

transmit nerve impulses away from the cell body


Answers (1)

best_answer

 

Neuron As Structural And Functional Unit Of Neural System - A Revision of Neuron

  • A neuron is a microscopic structure composed of three major parts, namely, cell body, dendrites and axon. Approximately 100 billion neurons are found in the human brain
  • There are two types of axons, namely, myelinated and unmyelinated.
  • The myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. 
  • The gaps between two adjacent myelin sheaths are called nodes of Ranvier.

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 Hence, the correct option is b. Are gaps between two adjacent myelin sheaths

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Rakesh

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