| Ventricular Contractile Cell Depolarization & Repolarization |
| Class, Please review the PHASE, Name and what is happening in that phase of the depolarization & repolarization timeline of a ventricular contractile cell. Then do the SELF-STUDY quiz below and check your work. | ||||||||
 |
||||||||
| 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; -90mV 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 |
||||||||
 |
||||||||
 |
||||||||
|
||||||||
| SELF-STUDY QUIZ OF DEPOLARIZATION AND REPOLARIZATION TIMELINE. | ||||||||
|
||||||||
| Phase 4: Phase 0: Phase 1: Phsee 2: Phase 3: |
||||||||
|
||||||||
|