Interactive Physiology 2.0 Cardiovascular System: Cardiac Cycle 1. Which wave of

Question

Interactive Physiology 2.0 Cardiovascular System: Cardiac Cycle 1. Which wave of the electrocardiogram (ECG) precedes isovolumetric relaxation? 2. During which phase is there a decrease in the volume of the ventricles? rentnlr esect During which phase of the cardiac cycle is the pressure in the left ventricle higher than the pressure in the aorta? 3. 4. The phase of the cardiac cycle where the ventricles are in systole but there is no change in ventricuar olume is caled Suxclumetet bhechen Closure of the atrioventricular valves marks the beginning of which phase of the cardiac cycle? 5. 6. Name the phase when the atrioventricular valves and the semilunar valves are all closed during ventricular diastole 7. What pressure condition must be met for the mitral valve to open?

Explanation / Answer

5. Isovolumetric contraction

6. Isovolumetric relaxation

7.mitral valve open during diastole, when ventricular pressure falls below atral pressure

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