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Systole is the phase of the cardiac cycle where the heart muscle contracts, pumping blood out of the chambers. It primarily involves the contraction of the ventricles.
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Diastole: The phase of the cardiac cycle where the heart muscles relax and chambers fill with blood.
Ventricular Contraction: The process during which ventricles contract to pump blood out of the heart.
Atrioventricular Valves: Valves located between atria and ventricles that close during systole to prevent backflow.