MEDICAL PHYSIOLOGY

Detailed explanation-1: -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. Diastolic blood pressure is measured when the heart ventricles relax.

Detailed explanation-2: -Blood pressure is measured using two numbers: The first number, called systolic blood pressure, measures the pressure in your arteries when your heart beats. The second number, called diastolic blood pressure, measures the pressure in your arteries when your heart rests between beats.

Detailed explanation-3: -In the second phase of ventricular diastole, called late ventricular diastole, as the ventricular muscle relaxes, pressure on the blood within the ventricles drops even further. Eventually, it drops below the pressure in the atria.

Detailed explanation-4: -The heart rests between beats so it can refill with blood. The pause between beats is called diastole. Your diastolic blood pressure is the measurement during this pause before the next heartbeat.