Ivy Tech APHY 102 Heart Practice Test 2026 – Complete Exam Prep

Ventricular ejection is the part of the heartbeat when the ventricles actually push blood out into the aorta and pulmonary trunk. This happens after the ventricle contracts enough to open the semilunar valves, so blood is rapidly ejected during systole. It follows the earlier isovolumetric contraction, where the ventricles contract but no blood leaves because all valves are closed. The atria contribute to filling earlier in the cycle (atrial systole) and aren’t involved in ejecting blood. After the ejection phase, the ventricles relax and the semilunar valves close, marking isovolumetric relaxation.