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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.