This phase adds approximately how much blood volume to the ventricles?

Press the appropriate button for each phase to view it individually, along with the associated heart actions. View the animated heart to compare the phase event graphs and heart actions. To assess the phase events, use the portion of the Wiggers diagram highlighted by the phase scan. Use the hide/show buttons to select individual graphs. Procedure: Click the ventricular ejection button to view a scan of this phase and the associated heart actions. Assessment: Analyze the phase events by answering the following 11 questions. The ventricles are in which stage of systole / diastole during this phase?

Why does the blood not flow back into the pulmonary veins and vena cava during this phase?

How much does the ventricular pressure change due to the blood volume added by atrial contraction?

What causes the semilunar valves to close during this phase?

What causes the AV valves to close during this phase?

Does ventricular pressure rise rapidly or slowly during this phase? Why?

To which blood type(s) can the husband safely donate blood?

What is the approximate duration of this phase?

What are the parents’ Rh types?