(Harvey's demonstration on how to apply a tourniquet to a bleeding arm)
-William Harvey, an Englishman, accurately described the circulation of the blood in the human body, confirming findings from earlier scholars such as Ibn Nafis
- He also proved that the blood was pumped by the heart
- His findings of how to proper stop blood flow to an arm, shown above, sparked others interest with the human circulatory system.
-This, with the help of a microscope, led to the discovery blood cells by a Dutch biologist Anton van Leeuwenhoek.
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