Hypertension means an increase in blood pressure. The heart pumps blood into the blood vessels. this creates some pressure that blood exerts against the walls of the vessels. this pressure is called blood pressure. Systolic BP it is the pressure of the blood which it exerts against the walls of vessels at the time when the heart contracts. it the pressure which gives us a bumping feel when we try to feel our pulse at the wrist. the normal value of systolic blood pressure is 120 mm of Hg. this value increases with age. Diastolic BP it the pressure of the blood against the walls of vessels when the heart relaxes or at a time when it is not pumping. it is less than systolic and its normal value is 80 mm of Hg. Why BP rises. BP rises in following conditions 1. narrowing of the vessels ( increase resistance) when vessels become narrow they will cause an increase in BP. narrowing can be a result of increased sympathetic stimulation that is in fea...
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