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The lateral pressure of blood in blood vessels on the wall of blood vessels per unit area is blood pressure. Usually, blood pressure refers to arterial blood pressure. When blood vessels dilate, blood pressure drops; When blood vessels contract, blood pressure rises.
When the ventricle contracts, blood flows from the ventricle to the artery, and the pressure of blood on the artery is the highest, which is called systolic pressure, also called high pressure. When the ventricle relaxes, the arterial blood vessels elastically retract, and the blood continues to flow slowly forward. At this time, the blood pressure drops, and the pressure is diastolic pressure, also known as low pressure.
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Precautions:
The normal value of blood pressure at all ages is convenient for modern people to know their blood pressure in time, find hypertension in time and treat it in time. Hypertension has become one of the diseases that harm modern people. As an "invisible killer", it puzzles modern people's lives and creates a series of troubles for modern people.
So modern people should have the consciousness of active treatment and prevention. If you are a patient with hypertension, the patient should be treated according to the doctor's requirements for the symptoms of hypertension.
If you are not a patient with hypertension, you should also develop a sense of prevention. Through scientific data and regular blood pressure measurement, you can find hypertension as early as possible, treat it as early as possible, and know your normal blood pressure in time.
/baike.baidu.com/item/%E6%AD%A3%E5%B8%B8%E8%A 1%80%E5%8E%8B%E5%80%BC/2702797? Fr = Aladdin "target =" _ blank "title =" Baidu Encyclopedia Normal Blood Pressure Value "> Baidu encyclopedia normal blood pressure value