MEDICAL PHYSIOLOGY

Detailed explanation-1: -The systolic blood pressure is defined as the maximum pressure experienced in the aorta when the heart contracts and ejects blood into the aorta from the left ventricle (approximately 120 mmHg).

Detailed explanation-2: -Systolic blood pressure is the pressure when the heart beats – while the heart muscle is contracting (squeezing) and pumping oxygen-rich blood into the blood vessels. Diastolic blood pressure is the pressure on the blood vessels when the heart muscle relaxes.

Detailed explanation-3: -Systolic blood pressure is measured when the heart ventricles contract. Diastolic blood pressure is measured when the heart ventricles relax. A systolic pressure of 115 millimeters of mercury is considered normal, as is a diastolic pressure of 70.

Detailed explanation-4: -Systolic pressure is the maximum blood pressure during contraction of the ventricles; diastolic pressure is the minimum pressure recorded just prior to the next contraction.

Detailed explanation-5: -The energy propelling the blood into the ventricle during diastole is derived from the potential energy from the elasticity of the blood vessels. During systole, the blood vessels are distended by the heart forcing blood from the ventricles into the systemic (or pulmonic) system.