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Question

Nerve fibres are surrounded by an insulating fatty layer called as

A
Adipose sheath
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B
Myelin sheath
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C
Hyaline sheath
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D
Peritoneum
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Solution

The correct option is B Myelin sheath
Myelin is an electrically insulating material, that forms a layer, the myelin sheath, around only the axon of a neuron. Myelin helps to insulate the axons from electrically charged atoms and molecules. Cholesterol is an essential constituent of myelin.

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