| Ventricular Myocyte Depolarization & Repolarization |
| Class, Please review the PHASE, Name and what is happening in that phase of the depolarization & repolarization timeline of a ventricular myocyte. Then do the SELF-STUDY quiz below and check your work. | ||||||||
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| Phase 4: Restoring ions with the Na+K+ pump (Na+ extracellular, K+ intracellular), RMP is -90mV Phase 0: Depolarization; Influx of Na+ through FAST Na+ channels; charge spikes to +30mV; threshold is -65mV Phase 1: Early Rapid Repolarization: K+ efflux, Fast Na+ channels close Phase 2: Slow Repolarization (plateau phase): K+ efflux, influx of Ca++ and Na+ (SLOW Na+ channels) Phase 3: Final Rapid Repolarization: K+ efflux, Ca++ and SLOW Na+ channels close |
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| SELF-STUDY QUIZ OF DEPOLARIZATION AND REPOLARIZATION TIMELINE. | ||||||||
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| Phase 4: Phase 0: Phase 1: Phsee 2: Phase 3: |
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