EVERYDAY SCIENCE

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: -These two sets of audible vibrations are temporally related to closure of the mitral and tricuspid valves. The first heart sound coincides with contraction of the ventricles, thus identifying the onset of ventricular systole and the end of mechanical diastole.

Detailed explanation-3: -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-4: -This first sound is the systolic blood pressure, the point when doctors or nurses check the gauge or meter for a reading. It’s the 120 if your blood pressure is 120 over 80. It represents the heart contracting, pushing the blood out against the artery in that arm.

Detailed explanation-5: -Systolic blood pressure (the first number) – indicates how much pressure your blood is exerting against your artery walls when the heart beats. Diastolic blood pressure (the second number) – indicates how much pressure your blood is exerting against your artery walls while the heart is resting between beats.