EVERYDAY SCIENCE

Detailed explanation-1: -Cardiac cycle events can be divided into diastole and systole. Diastole represents ventricular filling, and systole represents ventricular contraction/ejection. Systole and diastole occur in both the right and left heart, though with very different pressures (see hemodynamics below).

Detailed explanation-2: -Answer and Explanation: c. Contraction of the ventricular myocardium is most descriptive of ventricular systole. Ventricular systole is the increase in pressure within this cavity, eventually causing the ejection of blood throughout the body.

Detailed explanation-3: -Heartbeat Phases Systole is the contraction phase of the heartbeat. During this phase, the right and left ventricles contract to pump blood to the lungs and body. Blood pressure measures pressure during both ventricular contraction (systolic pressure) and during relaxation (diastolic pressure).

Detailed explanation-4: -Systole represents the time during which the left and right ventricles contract and eject blood into the aorta and pulmonary artery, respectively. During systole, the aortic and pulmonic valves open to permit ejection into the aorta and pulmonary artery.