THE MARVELLOUS DESIGN OF THE CIRCULATORY SYSTEM
The Dutch scientist Dr Hoorne once said that the body is made up of blood vessels. It was he who discovered a method of making the vessels visible by injecting them with a red dye. Tsar Peter the Great, who happened to be visiting Holland at that time, was so intrigued by the experiment that he arranged to take some of the dye home with him. Unfortunately, however, on his arrival in Russia he found that it was no longer useable. The sailors had consumed the alcohol in which it had been placed to preserve it!
Truly a wonder of creative design, every single one of the billions of cells in our body has access to the uninterrupted flow of the circulatory system. It takes the blood only about one second to move from the arterial capillaries to the venous capillaries. And it is during this second that the metabolic process takes place whereby oxygen is withdrawn from the blood and carbon dioxide from the tissue is permitted to enter. At the same time, the nutrients from the blood enter the tissue and the metabolic products from the tissue enter the bloodstream. Having fulfilled its task, the blood then flows back to the heart via the venous system.
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