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血液循环英国医学家哈维说:“太阳是世界的心脏,心脏是人体的太阳。”可见,心脏是多么重要。由于心脏的跳动,血液才能源源不断地输往全身。现在已经知道,每天人体心脏跳动产生的能量,足以把900千克重的物体升高1米。人从出生到50岁的时候,心脏跳动所产生的能量已能把100颗最重的人造卫星送入地球轨道。血液在人体内循环一周需
Blood circulation British physician Harvey said: “The sun is the heart of the world, the heart is the body’s sun.” "Visible, heart is how important. Because of the beating of the heart, blood can be continuously delivered to the body. It is now known that the energy produced by the beating of the human heart every day is enough to lift a 900 kilogram weight by 1 meter. From birth to the age of 50, the energy generated by the beating heart has enabled the 100 orbit satellites to be put into orbit. Circulation of blood in the human body needs a week