The Cardiovascular System, also known as the Circulatory System, is composed of the heart, blood, and blood vessels. The blood transfers oxygen and nutrients as it is pumped from the heart and afterwards picks up wastes as it is returning to the heart.
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Cardiovascular System
The total length of a human's blood vessels is such that it circles the globe 2.5 times.
"Drugs almost never deal with the reasons why these problems exist, while they frequently create new health problems as side effects."
-John Lee
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