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- Lead poisoning is known as plumbism.
- Lacrimal fluid lubricates the eyes.
- The iris membrane controls the amount of light that enters your eye.
- The hardest bone in the human body is the jawbone.
- The most common non-contagious disease in the world is tooth decay.
- Mouth ulcers are the most common human affliction.
- Corpses don't decompose as fast as they used to because of all of the chemicals and additives we eat now.
- The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
- Skin is the largest organ of the human body.
- Between the ages of 30 and 70, you nose may lengthen and widen by as much as half an inch.
- The sense of touch: electrical impulses travel from the skin toward the spinal cord at a rate of up to 425 feet per second.
- You blink every 2-10 seconds. As you focus on each word in this sentence, your eyes swing back and forth 100 times a second, and every second; the retina performs 10 billion computer-like calculations.
- Each red blood cell lives an average of 4 months and travels between the lungs and other tissues 75,000 times before returning to the bone marrow to die.
- The average square inch of skin holds 650 sweat glands, 20 blood vessels, 60,000 melanocytes, and during the summer months, six or seven mosquito bites.
- The lens of the human eye continues to go throughout a person's life.
- If you squeezed out all of the bacteria from your intestines, you could almost fill up a coffee mug.
- Several well documented instances have been reported of extremely obese people flushing aircraft toilets whilst still sitting on them. The vacuum action of these toilets sucked the rectum inside out.
- When honey is swallowed, it enters the blood stream within a period of 20 minutes.
- Pain travels through the body at 350 feet per second.
- The hardest substance in the human body is enamel.
- Sometimes when you belch, a little bit of your stomach acids comes along. This makes for a very disgusting and burning burp.
- Your hearing is less sharp if you eat too much.
- The human kidney consists of over 1 million little tubes with a total length of about 40 miles in both kidneys.
- Urine was once used as a detergent for washing.
- Electrical stimulation in certain areas of the brain can revive long lost memories.
- Ever wonder how a mortician keeps a dead person's mouth shut? Undertakers pass a suture through he nasal septum and tie it to the lower lip. Or the use an injector needle gun to place wires into the lower and upper jaws; these are then twisted together to close the mouth.
- The average person can go as many as eleven days without water. That's assuming a mean temperature of 60 degrees Fahrenheit.
- Human lungs are 100 times easier to blow up than a standard toy balloon. But they tend to make lousy party favors.
- Heroin is the brand name of morphine once marketed by Bayer.
- The kidneys filter about 500 gallons of blood each day.
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