Question

In neurons, what is caused by the inability of Na+ channels to open for several milliseconds...

In neurons, what is caused by the inability of Na+ channels to open for several milliseconds after their inactivation?

a.) depolarization

b.) hyperpolarization

c.) an action potential

d.) a refractory period

e.) termation

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Answer #1

In neurons when sodium channels becomes remain inactivated for some milliseconds , refractory period happens .

Because then the second impulse can't open the sodium channels thus no depolarization remain possible.

Thus , the impulse becomes unable to produce response which is called refractory period.

Depolarization is caused when sodium channels open so matters it is open or not after depolarization has been happened.

Hyperpolarization happens when potassium channels remain open for many times.

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