If the radius of blood vessels decrease, what will be in the blood pressur?
Mean blood pressure depends on the flow of blood from the heart (cardiac output) and the resistance to flow in the small arteries and microscopic resistance vessels (arterioles). BP = CO × PVR, where BP is blood pressure, CO is cardiac output, and PVR is the peripheral vascular resistance. Peripheral vascular resistance is dependent on the radius (r) of the small blood vessels.
