Blood always creates pressure on the walls of arteries due to pumping force of heart. the pressure gradually decreases when the blood moves from arteries to veins through capillaries. blood pressure in arteries(120 mm of Hg) is more than the pressure in the veins(80 mm of Hg). the normal value of blood pressure in the blood vessels is arterial blood pressure/venous blood pressure that is 120/80 mm of Hg. the normal range of arterial blood pressure is 100 - 140. the normal range of venous blood pressure is 70 - 90. arteries as they are more elastic than veins they can withstand high arterial pressure but vein cannot withstand more than 100 mm of Hg pressure, more than which leads to imminent death.
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Because everyone has blood pressure and without it no one can live
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Blood always creates pressure on the walls of arteries due to pumping force of heart. the pressure gradually decreases when the blood moves from arteries to veins through capillaries. blood pressure in arteries(120 mm of Hg) is more than the pressure in the veins(80 mm of Hg). the normal value of blood pressure in the blood vessels is arterial blood pressure/venous blood pressure that is 120/80 mm of Hg. the normal range of arterial blood pressure is 100 - 140. the normal range of venous blood pressure is 70 - 90. arteries as they are more elastic than veins they can withstand high arterial pressure but vein cannot withstand more than 100 mm of Hg pressure, more than which leads to imminent death.