2. Wiggers Diagram:
Wiggers Diagram shows what is occurring in the atria and ventricles (with respect to volume and pressure) during each phase.
Identify the events known as isovolumetric contraction and relaxation in terms of:
When do they occur
What is happening to pressure and volume during these periods
What is occurring with respect to the A-V and semilunar valves during these periods
The pressure-volume loop - be able to draw and label it.