BLOOD PRESSURE (BP) AND ITS ROLE.

Blood pressure is the pressure against the walls of the blood vessel produced by the discharge of
blood into them by contractions of the left ventricle.
   Role of blood pressure. The blood pressure is high in the arteries,gradually drops in the arterioles and capillaries, and become very low in the veins.It is this marked gradient of blood pressure that keeps the blood flowing from the arteries through the capillaries to the veins.fluids always flow from areas of high pressure to areas of lower pressure.