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8 Cards in this Set

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resting state
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.
Upon a sufficient voltage stimulus, channels allow for movement of ions across the cell membrane.
When the inside of the sell is again negative with respect to the outside.
Phase 0
Depolarization. Fast Na+ in.
Phase 1
Early Rapid Repolarization. K+ out, slow Na+ in.
Phase 2
Slow Repolarization. Ca++ in, K+ out, slow Na+ in.
Phase 3
Terminal Phase of Rapid Repolarization. Slow Na+ in.
Phase 4
Resting State. Na+ out, K+ in.