A nerve impulse will travel through a nerve f | vedclass

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(C) The conduction of a nerve impulse along a nerve fibre is initiated by the process of depolarisation.When a stimulus is applied to the nerve fibre,

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Sodium ions

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(C) The conduction of a nerve impulse along a nerve fibre is initiated by the process of depolarisation.When a stimulus is applied to the nerve fibre,the membrane permeability for $Na^+$ ions increases significantly.This leads to a rapid influx of $Na^+$ ions into the intracellular space,causing the membrane potential to shift from a resting state (negative) to a depolarised state (positive).Therefore,the sudden increase in permeability to $Na^+$ ions is essential for the generation and propagation of an action potential.

$A$ nerve impulse will travel through a nerve fibre only if the membrane suddenly becomes more permeable to

Similar Questions

$A$: Presence of myelin sheath increases the rate of conduction of nerve impulse.
$R$: Ionic channels are absent in the area covered by myelin sheath; therefore,depolarization occurs only at the nodes of Ranvier,resulting in saltatory or jumping conduction.

What is resting potential? How does the conduction of a nerve impulse take place?

Give scientific reasons:
$(1)$ There is no physical connection between sequential neurons,yet nerve impulses are conducted through them.
$(2)$ The neuroplasm of a neuron contains a high $K^+$ concentration during the maintenance of the resting potential.

$A$ neuron becomes an electrically charged cell primarily due to the differential permeability and diffusion of which ion?

When an impulse passes,the membrane is depolarized and the charge of the cells is

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