The Body is a Fascinating Machine

  • Your femur (thigh bone) is the largest and strongest bone in your body. Pound for pound, it can withstand four times as much pressure as the same amount of concrete because of the bone’s structure and density. 
  • You probably didn’t know it had a name, but that dark gray that your eyes see as soon as you turn off the lights—just before complete darkness takes over or your eyes adjust to the lack of light—is known as “eigengrau”… literally “intrinsic gray”.
  • And…the weird dots you see floating in the sky are your white blood cells. 
  • Researchers from Michigan State University showed there is a 64 percent pass rate for kidney stones in the rear seat of Walt Disney’s Thunder Mountain roller coaster. You have a 16 percent chance if you sit in the front seat. 
  • We don’t just have five senses; scientists believe we have as many as 21 senses, including balance, pain, and temperature. 
  • Some people bitten by the Lone Star tick can develop an allergy to red meat. Beef, lamb, and pork may make people with this allergy experience headaches, sneezing, a runny nose, and nausea. In severe cases, it can cause the person to be unable to breathe. For some sufferers, the allergy fades over time, but for others, it’s permanent.
  • The human sneeze travels about 100 mph, and expels about 100,000 germs. 
  • Over time, urine decomposes into ammonia; a great cleaning product that takes out stains. Romans used it so much for cleaning teeth and fabric that, by 70 A.D., tanners and traders were soliciting so much “clean” urine, the Emperor put a tax on it. 
  • You cannot tickle yourself because as you move, the cerebellum knows you’re about to self-tickle so the brain doesn’t waste time interpreting signals from those nerves; i.e., you know how it’s going to feel. But, that is the same part of the brain that anticipates pain, so when someone else tickles you, there is an expectation of a sensation, but…no matching command to your own arm, so your brain registers it as a mild type of danger. Since it doesn’t actually hurt, you laugh. 

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