The text states "all action potentials are identical to one another." There is a

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The text states "all action potentials are identical to one another." There is a

The text states "all action potentials are identical to one another." There is an exception, however, where an action potential can have a smaller than normal amplitude. When does this occur and how?

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bio_man

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13 years ago

During the relative refractory period, a smaller than normal action potential can occur. During this period potassium channels are still open causing repolarization. If a wave of depolarization occurs, Na+ can enter the cells through the newly reopened Na+ channels, but this depolarization is offset by the K+ efflux.

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