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8 Cards in this Set
- Front
- Back
resting state
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The electrical potential across the membrane is known as the resting membrane potential, -90 mV for most cardiac cells, and -70 mV at the SA and AV node cells.
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depolarization
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Upon a sufficient voltage stimulus, channels allow for movement of ions across the cell membrane.
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repolarization
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When the inside of the sell is again negative with respect to the outside.
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Phase 0
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Depolarization. Fast Na+ in.
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Phase 1
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Early Rapid Repolarization. K+ out, slow Na+ in.
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Phase 2
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Slow Repolarization. Ca++ in, K+ out, slow Na+ in.
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Phase 3
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Terminal Phase of Rapid Repolarization. Slow Na+ in.
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Phase 4
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Resting State. Na+ out, K+ in.
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