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 The
Circulatory System
Good diagrams of the
heart and the circulatory system, along with some basic information on the
system. Amazing
facts, such as:
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How many times will an average person's heart beat in their lifetime?
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How many red blood cells die each second? (You will be AMAZED at the
answer for this one!)
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How long does it take for a red blood cell to circulate through the body?
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Prepared for Mrs. Dudley's Class