Phase 0 rapid depolarization De-polarization. Leave the the South Pole. De-plane is when I leave the aircraft.
Action potential is a change in voltage across the cell membrane of heart cells
Ions are charged atoms
Repolarization goes from positive to negative Re-polarization is when I return to the South Pole
Resting potential is -90 millivolts
The main ions outside the cell at rest are sodium
The main ions inside the cell at rest are potassium
Sodium channels open allowing voltage to become more positive
Sodium flows into the cell
Non-pacemaker cells conduct action potential
Phase 4 is when the cell is at rest
Sodium potassium pump maintains the concentration of sodium and potassium
Sodium potassium pump uses energy from ATP
3 Sodium ions move out, 2 potassium ions move in
Phase 0 is a positive change
Phase 0 lasts 2 milliseconds in ventricular cells
Phase 0 Sodium channels open
Phase 1 sodium channels close
Phase 1 potassium channels open
Phase 1 potassium exits the cell
Pacemaker cells spontaneously generate action potentials
Non-pacemaker cells conduct action potential
Phase 1 is not found in pacemaker cells
Phase 2 is not found in pacemaker action potentials
Phase 3 is rapid Repolarization
Phase 3 calcium channels close
Phase 3 potassium leaves the cell
Membrane cause other cells to follow wiki Like standing sitting at a concert, clapping
