PATHOLOGY

Detailed explanation-1: -Generally, the more blood that’s pumped and the narrower the artery the higher the pressure is. Blood pressure is measured both as the heart contracts, which is called systole, and as it relaxes, which is called diastole. Systolic blood pressure is measured when the heart ventricles contract.

Detailed explanation-2: -The mitral valve opens, signifying the beginning of ventricular filling where the high pressure from the blood vessels forces blood into the expanding ventricle. After the ventricle fills and transitions to contracting, the pressure eventually exceeds that of the blood vessels.