Which ion plays a key role in triggering a nerve impulse?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
23 May 2018
Last updated
28 May 2026

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Explanation

The initiation of a nerve impulse primarily involves the influx of sodium ions (Na+) into the neuron, which causes depolarization and the generation of the action potential.

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