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The velocity of action potential propagation

a)

Is independent of an axon’s diameter

b)

Depends on the thickness of the myelin around the axon

c)

Will be unaffected if the axon becomes demyelinated

d)

Is fastest in non-myelinated axons



Question ID - 5353 | SaraNextGen Top Answer

The velocity of action potential propagation

a)

Is independent of an axon’s diameter

b)

Depends on the thickness of the myelin around the axon

c)

Will be unaffected if the axon becomes demyelinated

d)

Is fastest in non-myelinated axons

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

The velocity of conduction of action potential propogation is fastest in large diameter myelinated axons than in unmyelinated axons. In myelinated fibres,, conduction velocity is directly proportional to the thickness of the myelin sheath.

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