Zusammenfassung der Ressource
Graded Potentials
- If concentration of ions across
plasma membrane changes,
membrane's voltage changes
- Hyperpolarisation
- Increase in polarity to make it more negative
- Cause
- Efflux of K+ through passive K+ channels
- Influx of Cl- through
passive Cl- channels
- Depolarisation
- Decrease in polarity to make it more positive
- Cause
- Influx of Na+ through
(normally closed) Na+
channels