What does the cardiac cycle reveal about the opening and closing of the heart valves?

Question

Quizplus · Accepted Answer

The cardiac cycle involves a sequence where the atrioventricular (AV) valves close to prevent backflow into the atria during ventricular contraction, followed by the opening and then closing of the semilunar valves as blood is ejected into the arteries, and finally the reopening of the AV valves to allow ventricular filling. This sequence ensures efficient blood flow through the heart and into the systemic and pulmonary circulations.

What Does the Cardiac Cycle Reveal About the Opening and Closing