Thursday, March 21, 2013

interesting facts about human body


  • Our heart beats around 100,00 times every day.
  • Our blood is on a 60,000-mile journey.
  • Our eyes can distinguish up to one million colour surfaces and take in more information than the largest telescope known to man.
  • Our lungs inhale over two million litres of air every day, without even thinking. They are large enough to cover a tennis court.
  • Our hearing is so sensitive it can distinguish between hundreds of thousands of different sounds.
  • Our sense of touch is more refined than any device ever created.
  • Our brain is more complex than the most powerful computer and has over 100 billion nerve cells.
  • We give birth to 100 billion red cells every day.
  • When we touch something, we send a message to our brain at 124 mph.
  • We have over 600 muscles.
  • We exercise at least 30 muscles when we smile.
  • We are about 70 percent water.
  • We make one litre of saliva a day.
  • Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities.
  • In one square inch of our hand we have nine feet of blood vessels, 600 pain sensors, 9000 nerve endings, 36 heat sensors and 75 pressure sensors.
  • We have copper, zinc, cobalt, calcium, manganese, phosphates, nickel and silicon in our bodies.
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