Explain the hyperpolarization that sometimes occurs after the
action potential.
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Explain the hyperpolarization that sometimes occurs after theaction potential.
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Hyperpolarization is a change in a cells membrane potential that makes it more negative It is the opposite of a depolarization It inhibits action potentials by increasing the stimulus required to move the membrane potential to the action potential threshold Hyperpolarization is often caused by efflux of K a cation through K channels or influx of Cl an anion through Cl channels On the other hand influx of cations eg Na through Na channels or Ca2 through Ca2 channels inhibits hyperpolarization If a cell has Na or Ca2 currents at rest then inhibition of those currents will also result in a hyperpolarization This voltagegated ion channel response is how the hyperpolarization state is achieved In
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