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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 you could remove all of your skin, it would weigh up to 5 pounds.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.