ANATOMY

Detailed explanation-1: -Blood pressure is measured as two numbers: Systolic blood pressure (the first and higher number) measures pressure inside your arteries when the heart beats. Diastolic blood pressure (the second and lower number) measures the pressure inside the artery when the heart rests between beats.

Detailed explanation-2: -Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls. This is called diastolic pressure.

Detailed explanation-3: -Systolic pressure is the pressure when the ventricles pump blood out of the heart. The pressure on your arteries is highest during this time. Diastolic pressure is the pressure between beats, when the heart is filling with blood. The pressure on your arteries is lowest during this time.

Detailed explanation-4: -The diastolic blood pressure is the minimum pressure experienced in the aorta when the heart is relaxing before ejecting blood into the aorta from the left ventricle (approximately 80 mmHg).

Detailed explanation-5: -Diastole represents when the blood vessels return blood to the heart in preparation for the next ventricular contraction. Systole begins when the mitral valve (or tricuspid) closes and concludes with the closure of the aortic valve (or pulmonic).