Heart Phase Description A. Systole 1. Contraction phase of the heart B. Diastole 2. Relaxation phase of the heart C. Isovolumetric Contraction 3. Ventricles relax with no volume change D. Isovolumetric Relaxation 4. Ventricles contract with no volume change

Step-by-step solution

Systole is the contraction phase of the heart, during which the ventricles contract to pump blood out of the heart. Diastole is the relaxation phase of the heart, during which the heart chambers relax and fill with blood. Isovolumetric Contraction occurs when the ventricles contract with no volume change, as the valves are closed and pressure builds up before ejection. Isovolumetric Relaxation happens when the ventricles relax with no volume change, as all valves are closed and the pressure decreases before the cha