Learn about the sequence of events that occur during one heartbeat, including diastole, atrial contraction, ventricular contraction, and the opening and closing of heart valves.
Cardiac Cycle 1. Introduction The cardiac cycle refers to the sequence of events that occur in the heart during one heartbeat. It consists of two main phases: diastole (relaxation phase) and systole (contraction phase). 2. Phases of the Cardiac Cycle Diastole: Atria and ventricles are relaxed, and blood flows passively from the atria to the ventricles. Atria contract (atrial systole) to push t...…
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