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我们知道血压是因血液在血管内流动对血管壁产生的侧压,因而不难理解,这种侧压是有波动的。您不妨测试一下:用同一个血压计在一天的不同时间测同一上臂的血压,并将所测的血压值画在座标纸上,此时就会发现,所画的线是一条曲线而不是一条直线。 那么,血压为什么会波动呢? 举一个生活中的例子,如果我们长时间观察河水对河岸的冲击,就会发现这种冲击力是不一样的,当风大时,水对岸边的冲击力就大;当河道中有船只通过时,河水受到船体的挤压也会增加对堤岸的冲击。同样,人体的血管壁承受血液的冲击也如同堤岸接受河水的冲击一样,更何况人类是高级动物,除了简单的物理因素外,还有许多复杂的神经调节和激素调
We know that blood pressure is due to blood flow in the blood vessels on the wall of the lateral pressure, it is not difficult to understand, this lateral pressure is fluctuating. You may wish to test: the same sphygmomanometer at different times of the day to measure the same upper arm blood pressure, and the measured blood pressure values drawn on the coordinate paper, then you will find that the drawn line is a curve instead of a straight line. So, why the blood pressure fluctuations? Take a living example, if we observe the impact of river water for a long time, you will find that the impact is not the same, when the wind is large, the impact of water on the shore It is large; when there is a vessel passing by in the river course, the squeezing of the river by the hull will also increase the impact on the bank. Similarly, the body’s blood vessel wall to withstand the impact of blood as the embankment to accept the impact of the same river, not to mention humans are advanced animals, in addition to simple physical factors, there are many complex neuromodulation and hormones