It is the pressure of the blood on the arterials walls and it is produced because of the contraction of the heart muscles while pumping the blood. The blood will be forced to enter into the aorta or pulmonary artery.
It is the pressure of the blood on the arterials walls and it is produced because of the contraction of the heart muscles while pumping the blood. The blood will be forced to enter into the aorta or pulmonary artery.