Q.

Consider the following statements.

(A) Myelin sheath is produced by the Schwann cells.

(B) In myelinated nerve fibre, myelin sheath is present throughout the length of the axon.

Select the correct option. 

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a

Both (A) and (B) are true.

b

(A) is true but (B) is false.

c

(A) is false but (B) is true.

d

Both (A) and (B) are false.

answer is B.

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Detailed Solution

The myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. The gaps between two adjacent myelin sheaths are called nodes of Ranvier.

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