The normal resting heart rate is called the sinus rhythm, created and sustained by the sinoatrial node, a group of pacemaking cells found in the wall of the right atrium. Cells in the sinoatrial node do this by creating an action potential. The cardiac action potential is created by the movement of specific electrolytes into and out of the pacemaker cells. The action potential then spreads to nearby cells.
The normal resting heart rate is called the sinus rhythm created and sustained by the sinoatrial node a group of pacemaking cells found in the wall of the right atrium Cells in the sinoatrial node do this by creating an action potential The cardiac action potential is created by the movement of specific electrolytes into and out of the pacemaker cells The action potential then spreads to nearby cells