File:Ventricular myocyte action potential.svg
Summary
Basic ventricular myocyte action potential (with labels).
0: depolarization: voltage-gated sodium channels open allowing influx of sodium ions
1: initial repolarization: inactivation of voltage-gated sodium channels; voltage-gated potassium channels begin to open allowing minor efflux of potassium ions
2: plateau: voltage-gated calcium channels open allowing influx of calcium ions triggering calcium release from sarcoplasmic reticulum which results in myocyte contraction
3: rapid repolarization: voltage-gated slow potassium channels open allowing major efflux of potassium ions; voltage-gated calcium channels close
4: resting potential: potassium channels allow for potassium permeability
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:49, 5 January 2017 | | 570 × 340 (1 KB) | 127.0.0.1 (talk) | Basic ventricular myocyte action potential (with labels).<br><b>0:</b> <i>depolarization:</i> voltage-gated sodium channels open allowing influx of sodium ions<br><b>1:</b> <i>initial repolarization:</i> inactivation of voltage-gated sodium channels; voltage-gated potassium channels begin to open allowing minor efflux of potassium ions<br><b>2:</b> <i>plateau:</i> voltage-gated calcium channels open allowing influx of calcium ions triggering calcium release from sarcoplasmic reticulum which results in myocyte contraction<br><b>3:</b> <i>rapid repolarization:</i> voltage-gated slow potassium channels open allowing major efflux of potassium ions; voltage-gated calcium channels close<br><b>4:</b> <i>resting potential:</i> potassium channels allow for potassium permeability |
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