Home
Class 12
BIOLOGY
Myelinated nerve fibers are white colour...

Myelinated nerve fibers are white coloured because of

A

(a) chromidial substance

B

(b) neurolemma

C

(c) myelin

D

(d) none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

Read the given statements and select the correct option. (i)Synaptic cleft of neurons secreates adrenaline. (ii)Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. (iii)Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath. (iv)Spinal and cranial nerves are made of non-myelinated nerve fibres.

A substance appears coloured because

Myelin sheath of nerve fibres is produced by

Assertion:Myelinated nerve fibres are present in spinal and cranial nerves. Reason:Myelinated nerves conduct impulses more radidly than unmyelinated nerves.

Myelinated and unmyelinated nerve fibres are found in PNS respectively are

Nonmyelinated nerve fibre , saltatory conduction , node of Ranvier , myelin sheath

In myelinated nerve fibres, the myelin sheath is present around the

Assertion : Myelin sheath insulates the nerve fibre and prevents its depolarisation. Reason : Nerve impulses are conducted more rapidly in non-myelinated nerve fibres than in myelinated ones.

Select the correct statement regarding spinal cord. 1) it has butterfly shaped gray matter which is present outside white matter 2) It extends from medulla oblongata upto last coccygeal vertebra 3) Its white matter consists chiefly of long, myelinated nerve fibers 4)Dorsal root ganglia contain cell bodies of motor neurons