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Structure of the Neuronal Soma and Axon

Identify the ...

Question

Identify the statements as true/false. (i) Nodes of Ranvier is absent in nonmyelinatedneuron.

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Solution

True.

• The gaps between two adjacent myelin sheaths are called nodes of Ranvier.
• Unmyelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath around the axon.
• Thus, nodes of Ranvier are only present when the axon of a neuron is myelinated.

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Structure of the Neuronal Soma and Axon

Standard XII Biology

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