Unformatted text preview: 8 Steps in the Cardiac Cycle 6. Ventricular pressure falls:
- semilunar valves close - ventricles contain end-systolic volume
(ESV), about 40% of end-diastolic volume 7. Ventricular diastole:
. ventricular pressure is higher than atrial pressure
- all heart valves are closed - ventricles relax (isovolumetric relaxation) ...
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- Spring '11