Question

During the propagation of a nerve impulse, the action potential results from the movement of
O K+ ions from extracellular fluid to intracellular fluid
O Nations from intracellular fluid to extracellular fluid
Kions from intracellular fluid to extracellular fluid
Nations from extracellular fluid to intracellular fluid​

Answer 1

Answer:

Na+ ions from extracellular fluid to intracellular fluid

Explanation:

Action potential in a nerve is formed due to opening of Na + channels of the axonal membrane which results in movement of Na + ions inside the axonal cytoplasm.

During resting state the axonal membrane is nearly impermeable to Na + ions and more permeable to K+ ions.

So in the cytoplasm there is K+ concentration and in the external fluid there is Na+ ion concentration.

When stimulus is applied then the Na+ ions move inside the axon generating action potential .

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