At first let’s explain blood pressure. When blood goes in blood vessel, pressure to depend on blood vessel is called blood pressure.
The heart pushes around 60-70 times a minute, blood to blood vessel like a pump. This is the pulse that beats against the wrists profusely when I touch it.高血圧
At the moment when heart shrinks and pushed blood, blood vessel is most strongly pressurized. This is blood pressure for the shrinkage period (systolic blood pressure). And, at time when heart opens after having shrunk (expanded), pressure lowers most. This is diastolic blood pressure (the lowest blood pressure). Even if whichever of the shrinkage period blood pressure and the diastolic blood pressure is high, I say high blood pressure.
The hose is in a tense condition tight if I increase water when I divert water to a hose of the water service. The water pressure that is high in this is in condition to hang to the hose. In addition, the hose behind is in an after all tense condition from there if I press down a hose somewhere and am hard to go and do it even if there is little quantity of the water. The street of blood vessel draining quantity (cardiac output) and that of blood which heart sends off acts, and, in the same way as this, the blood pressure is fixed by (resistance of the peripheral artery).