Zoology - Body Fluids and Circulation Question with Solution | TestHub

The maximum pressure exerted by blood on the walls of arteries when the heart contracts is called Systolic blood pressure. Its value is 120 mm Hg. The minimum pressure exerted by blood on the walls of arteries when the heart relaxes is called Diastolic blood pressure. Its value is 80 mm Hg. Systolic blood pressure in arteries is due to ventricular systole which lasts for 0.3 seconds while the diastolic blood pressure in arteries is due to ventricular diastole which lasts for 0.5 seconds.