Which of the following ions are required for | vedclass

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Question

(D) Nerve conduction,or the transmission of a nerve impulse along an axon,primarily relies on the movement of $Na^+$ and $K^+$ ions across the neurona

Vedclass · Accepted Answer

$Na^+$ and $K^+$

Vedclass · Answer

(D) Nerve conduction,or the transmission of a nerve impulse along an axon,primarily relies on the movement of $Na^+$ and $K^+$ ions across the neuronal membrane.During the resting state,the axonal membrane is more permeable to $K^+$ ions and nearly impermeable to $Na^+$ ions.When a stimulus is applied,the membrane becomes permeable to $Na^+$ ions,leading to a rapid influx of $Na^+$ into the cell,which causes depolarization.Following this,the membrane becomes permeable to $K^+$ ions,leading to an efflux of $K^+$ out of the cell,which causes repolarization.Thus,$Na^+$ and $K^+$ are the essential ions for the generation and conduction of nerve impulses.

Which of the following ions are required for nerve conduction?

Similar Questions

Differentiate between Resting potential and Action potential.

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

Give scientific reasons:
$(1)$ In an excited nerve fibre region,a positive charge is created inside the plasma membrane.
$(2)$ In some animals,the conduction of nerve impulses is saltatory.

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

When a neuron is not conducting any impulse,the axonal membrane is comparatively more permeable to $K^+$ ions and nearly impermeable to $Na^+$ ions.

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