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Na+/K+ ATP pumps restore the resting membrane potential following depolarization True or False

Na+/K+ ATP pumps restore the resting membrane potential following depolarization True or False

Science   Anatomy-And-Physiology   
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Answer #1

False

sodium potassium pump restore the resting potential of the neuron after hyperpolarization .

An action potential have depolarization phase ,repolarization phase and hyperpolarization . Depolarization is due to sodium ion movement inside the cell.

After depolarization Sodium ion channel get closed while potassium ion channel open this lead to efflux of k+ out of cell . This cause repolarization of of the neuron. The cell become more negative to the inside now . Repolarization follows hyperpolarization .

After hyperpolarization sodium potassium pump operate this restore the resting potential by moving sodium out of cell and 2 k+ inside the cell .

So sodium potassium ATPase operate after hyperpolarization.

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