Which part of neuron is made up of electrically insulating material?

Dendrite

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Myelin sheath

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Axon

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Cell body

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Solution

The correct option is B
Myelin sheath

Myelin sheath which covers the axon with certain gaps between two successive sheaths is composed of fatty material (like cholesterol, few proteins and lipids). Myelin with its various components does not permit movement of electric charges and acts as a barrier for the movement of charges across its cross section.

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Similar questions

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

Q. Electrical impulse travels in a neuron from :
(a) dendrite → axon → axon end → cell body
(b) cell body → dendrite → axon → axon end
(c) dendrite → cell body → axon → axon end
(d) axon end → axon → cell body → dendrite

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

Question 2
Electrical impulse travels in a neuron from

(a) Dendrite → axon → axonal end → cell body
(b) Cell body → dendrite → axon → axonal end
(c) Dendrite → cell body → axon → axonal end
(d) Axonal end → axon → cell body → dendrite

Q. (a) Draw the structure of a neuron and label the following on it:
Nucleus, Dendrite, Cell body and Axon
(b) Name the part of neuron:
(i) where information is acquired.
(ii) through which information travels as an electrical impulse.

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