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action potential
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    Also found in: Medical, Encyclopedia, Wikipedia 0.09 sec.

action potential

In biology, a change in the potential difference (voltage) across the membrane of a nerve cell when an impulse passes along it. A change in potential (from about −60 to +45 millivolts) accompanies the passage of sodium and potassium ions across the membrane.



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? Mentioned in ? References in periodicals archive
 
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