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NEETZoology-Neural Control and Coordination

NEET Zoology Nerve Impulse Transmission MCQ Question

Type: MCQ-conceptual-Medium-Class 11

The factor responsible for repolarisation of an axonal membrane is

A

Opening of K⁺ leaky channels

B

Opening of voltage gated Na⁺ channels

C

Closure of Na⁺ leaky channels

D

Opening of voltage gated K⁺ channels

Correct Answer

Option D

Detailed Explanation

Repolarisation occurs due to the opening of voltage-gated K⁺ channels, allowing K⁺ to exit the cell.

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