repolarization
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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.
re·po·lar·i·za·tion
(rē'pō-lăr-i-zā'shŭn),The process whereby the membrane, cell, or fiber, after depolarization, is polarized again, with positive charges on the outer and negative charges on the inner surface.
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
(rē-pō′lər-ĭ-zā′shən)n.
The restoration of a polarized state across a membrane, as in a muscle fiber following contraction.
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.
re·po·lar·i·za·tion
(rē-pō'lăr-ī-zā'shŭn)The process whereby the membrane, cell, or fiber, after depolarization, is polarized again, with positive charges on the outer and negative charges on the inner surface.
repolarization
Restoration of the resting polarized state in a muscle or nerve fibre. Polarization implies a balanced electrical charge on either side of the fibre membrane, being, in the resting state, negative on the inside and positive on the outside. In depolarization the charges are locally reversed.repolarization
the re-establishment of polarity, especially the return of cell membrane potential to resting potential after depolarization.