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repolarization |
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repolarization /re·po·lar·iza·tion/ (re-po″ler-ĭ-za´shun) the reestablishment of polarity, especially the return of cell membrane potential to resting potential after depolarization.
repolarization [rēpō′lərīzā′shən] Etymology: L, re + polus, pole; Gk, izein, to cause the process by which the membrane potential of a neuron or muscle cell is restored to the cell's resting potential. In a cardiac muscle cell, the repolarization process begins after phase 0 of the action potential and is completed by the end of phase 3. It encompasses the effective and relative refractory periods and correlates with the Q-T interval on the electrocardiogram. See also cardiac action potential. repolarization [re″po-lah-rĭza´shun] 1. the reestablishment of polarity, especially the return of a cell's membrane potential to resting potential after depolarization. 2. in cardiac physiology, the restoration of the cell to its maximal diastolic potential, represented by phase 0 to phase 3 of the action potential.
repolarization the re-establishment of polarity, especially the return of cell membrane potential to resting potential after depolarization. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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