ANATOMY

Detailed explanation-1: -Systole begins when the mitral valve (or tricuspid) closes and concludes with the closure of the aortic valve (or pulmonic). This stage of the cardiac cycle represents ventricular contraction, forcing blood into the arteries.

Detailed explanation-2: -Ventricular contraction called systole. 2. Ventricular relaxation called diastole.

Detailed explanation-3: -Ventricular Systole refers to the phase of the cardiac cycle where the left and right ventricles contract at the same time and pump blood into the aorta and pulmonary trunk, respectively.

Detailed explanation-4: -During systole, the two ventricles develop pressure and eject blood into the pulmonary artery and aorta. At this time the AV valves are closed and the semilunar valves are open. The semilunar valves are closed and the AV valves are open during diastole.