Cardiac Cycle
(Animations)
Background Info
The cardiac cycle is the events that occur during a single heartbeat. During a cardiac cycle, both the atria and ventricles undergo periods of contraction (systole) and relaxation (diastole), which are coordinated by the heart’s pacemaker cells.
Cardiac Cycle Blood Flow
(Animated GIF)
Phases of the Cardiac Cycle
(Animated GIF)
ECG and the Cardiac Cycle
(Animated GIF)
