ANATOMY

Detailed explanation-1: -Ventricular diastole: lasts about 0.5 seconds-begins before atrial systole, allowing the ventricles to fill passively with blood from the atria.

Detailed explanation-2: -The period of relaxation is called diastole in which the ventricle fills with blood and the period of ventricle contraction is called systole.

Detailed explanation-3: -The four components of diastole include (1) isovolumic relaxation period (2) rapid filling (3) slow filling (4) atrial systole.

Detailed explanation-4: -The heartbeat is caused by the heart muscles relaxing and contracting. During this cycle, the period of relaxation is called diastole and the period of contraction is called systole. In this article, we will explain how diastole and systole relate to blood pressure.

Detailed explanation-5: -systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk.