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Central Nervous System

Protective sh...

Question

Protective sheath present around the axons that prevents impulses from jumping across neurons.

A

Synapse

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B

Neurolemma

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C

Myelin sheath

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D

Node of Ranvier

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Solution

The correct option is C
Myelin sheath

It is the thick protective sheath made up of Schwann cells that is present wrapped around the axons of neurons

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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?

Q. Match the following parts of a neuron to their respective functions.

Parts of Neuron	Functions
(A) Dendrite	(i) Insulates axon
(B) Axon	(ii) Recieves impulses
(C) Myelin sheath	(iii) Conducts impulses

The myelin sheath is formed by _______ which covers the axons of some neurons.

Q. Some neurons have a __________ around their axons.

Q. The gap in the myelin sheath on the axon of certain neurons is called:

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