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Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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There are 60,000 miles of blood vessels in every adult human.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.