What initiates the generation of a nerve impu | vedclass

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(B) The generation of a nerve impulse (action potential) is initiated by the rapid influx of sodium ions $(Na^+)$ into the neuron.When a stimulus is a

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$Na^+$

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(B) The generation of a nerve impulse (action potential) is initiated by the rapid influx of sodium ions $(Na^+)$ into the neuron.When a stimulus is applied to a site on a polarized membrane,the permeability of the membrane to $Na^+$ ions increases significantly.This leads to a rapid influx of $Na^+$ ions,which causes the reversal of the polarity at that site,known as depolarization.This change in membrane potential is the fundamental step in generating a nerve impulse.

What initiates the generation of a nerve impulse?

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