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Myelinated and Unmyelinated Fibres

Nodes of Ranv...

Question

Nodes of Ranvier is absent in non-myelinated neuron

A

True

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B

False

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Solution

The correct option is A True
Nodes of Ranvier do not exist in non-myelinated nerve fibers.
This is due to the absence of nissl bodies in Ranvier's node.
Schwann cells surround myelinated nerve fibers, forming a myelin sheath surrounding the axon.
Final Answer: The given statement is true.

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Similar questions

Q. Read the following statements:
(i) Saltatory type of present in non-myelinated nerve fibres (axons) only
(ii) The nerve impulse generated at a point in the neuron faes resistances at sites where myelin sheath is present
(iii) Nodes of Ranvier of axon is exposed to ECF
(iv) In myelinated neurons, ion channels and transport pumps are absent in the nodes of Ranvier
(v) In myelinated nerve fibre, the nerve impulse travel as a continous wave of depolarisation
How many of the statements are correct?

Draw a well-labelled diagram of a neuron showing the following parts- perikaryon, dendrites, node of Ranvier, and the myelin sheath.

Q. Assertion :Non-myelinated nerve fibres do not possess nodes of Ranvier. Reason: This is due to the absence of nissl's bodies in node of Ranvier.

Q. Function of myelinated and non myelinated neuron?

Q. Draw a well labelled diagram of a non-myelinated neuron.

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