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8 Cards in this Set
- Front
- Back
In ventricular action potential, what is involved in Phase 0?
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Na gates open, rapid upstroke
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In ventricular action potential, what is involved in Phase 1?
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K channels open, Na channels close
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In ventricular action potential, what is involved in Phase 2?
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Ca influx = plateau
Balances K efflux Myocyte contraction |
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In ventricular action potential, what is involved in Phase 3?
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Rapid repolarization
Massive K efflux Ca channel closure |
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In ventricular action potential, what is involved in Phase 4?
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Resting potential
K permeability |
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In pacemaker action potential, what is involved in Phase 4?
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Slow diastolic depolarization
Na conductance increases, membrane depolarizes |
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In pacemaker action potential, what is involved in Phase 0?
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Opening of Ca channels
Na channels inactivated |
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In pacemaker action potential, what is involved in Phase 3?
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Ca channel inactivation
Inc K activation |
