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(B) In a resting state,the axonal membrane is polarized,meaning the inside is negatively charged relative to the outside.When a stimulus is applied,th

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From negative to positive and back to negative

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(B) In a resting state,the axonal membrane is polarized,meaning the inside is negatively charged relative to the outside.When a stimulus is applied,the permeability of the membrane to $Na^+$ ions increases,causing an influx of $Na^+$.This leads to depolarization,where the inside of the membrane becomes positively charged.Following this,the membrane permeability to $K^+$ increases,and $K^+$ ions move out,leading to repolarization,where the membrane potential returns to its original negative state.

When a neuron is stimulated to generate a nerve impulse,the electrical potential on the inside of the nerve membrane changes:

Similar Questions

Select the correct option for the permeability of the axonal membrane in a resting state for $K^{+}$,$Na^{+}$,and negatively charged proteins.

$A$: 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.

Which of these processes occur during repolarisation of nerve fibre?
$(I)$. Open $Na^+$ channel
$(II)$. Closed $Na^+$ channel
$(III)$. Closed $K^+$ channel
$(IV)$. Open $K^+$ channel

When a neuron is in a resting state,i.e.,not conducting any impulse,the axonal membrane is:

When a stimulus is applied to the membrane of a neuron,it causes a rapid influx of

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