Tuesday, January 6, 2015

MYSTERIES OF THE HUMAN BODY

 The
> Human Body is 
> a treasure trove of mysteries, one that still confounds
> doctors and scientists 
> about the details of its working. It's not an
> overstatement to say that every 
> part of your body is a miracle.  Here are fifty facts
> about your body, some 
> of which will leave you stunned...or... 
> 
> 1.      
> 
> It's possible for
> your body to survive 
> without a surprisingly large fraction of its internal
> organs.   Even 
> if you lose your stomach, your spleen, 75% of your liver,
> 80% of your 
> intestines, one kidney, one lung, and virtually every organ
> from your pelvic and 
> groin area, you wouldn't be very healthy, but you would
> live. 
> 
> 
> 2.       During your lifetime,
> you will 
> produce enough saliva to fill two swimming pools. Actually,
> Saliva is more 
> important than you realize. If your saliva cannot dissolve
> something, you cannot 
> taste it. 
> 
> 3.      
> The largest 
> cell in the human body is the female egg and the smallest is
> the male sperm. 
> 
> The
> 
> egg is actually the only cell in the body that is visible by
> the naked eye. 
> 
> 
> 4.       The strongest muscle
> in the human 
> body is the tongue and the hardest bone is the jawbone.
> 
> 
> 5.      
> Human feet have 
> 52 bones, accounting for one quarter of all the human
> body's bones. 
> 
> 
> 6.      
> Feet have 
> 500,000 sweat glands and can produce more than a pint of
> sweat a day. 
> 
> 
> 7.      
> The acid in 
> your stomach is strong enough to dissolve razor blades. The
> reason it doesn't 
> eat away at your stomach is that the cells of your stomach
> wall renew themselves 
> so frequently that you get a new stomach lining every three
> to four days. 
> 
> 
> 8.      
> The human lungs 
> contain approximately 2,400 kilometers (1,500 mi) of airways
> and 300 to 500 
> million hollow cavities, having a total surface area of
> about 70 square meters, 
> roughly  the same area as one side of a tennis court.
> Furthermore, if all 
> of the capillaries that surround the lung cavities were
> unwound and laid end to 
> end, they would extend for about 992 kilometers. Also, your
> left lung is smaller 
> than your right lung to make room for your heart.
> 
> 
> 9.      
> Sneezes 
> regularly exceed 100 mph, while coughs clock in at about 60
> mph. 
> 
> 
> 10.     Your
> body gives off enough 
> heat in 30 minutes to bring half a gallon of water to a
> boil. 
> 
> 
> 11.     Your
> body has enough iron 
> in it to make a nail 3 inches long. 
> 
> 12.    
> Earwax production is 
> necessary for good ear health.  It protects the
> delicate inner ear from 
> bacteria, fungus, dirt and even insects. It also cleans and
> lubricates the ear 
> canal. 
> 
> 13.    
> Everyone has a unique 
> smell, except for identical twins, who smell the same. 
> 
> 
> 14.     Your
> teeth start growing 6 
> months before you are born. This is why one out of every
> 2,000 newborn infants 
> has a tooth when they are born 
> 
> 15.     A
> baby's head is 
> one-quarter of its total length, but by the age of  25
> will only be 
> one-eighth of its total length. This is because people's
> heads grow at a much 
> slower rate than the rest of their bodies. 
> 
> 16.    
> Babies are born with 300 
> bones, but by adulthood the number is reduced to 206. Some
> of the bones, like 
> skull bones, get fused into each other, bringing down the
> total number. 
> 
> 
> 17.    
> It's not possible to 
> tickle yourself. This is because when you attempt to tickle
> yourself you are 
> totally aware of the exact time and manner in which the
> tickling will occur, 
> unlike when someone else tickles you. 
> 
> 18.     Less
> than one third of the 
> human race has 20-20 vision. This means that two out of
> three people cannot see 
> perfectly. 
> 
> 19.     Your
> nose can remember 
> 50,000 different scents. But if you are a woman, you are a
> better smeller than 
> men, and will remain a better smeller throughout your life. 
> 
> 
> 20.     The
> human body is 
> estimated to have 60,000 miles of blood vessels.
> 
> 
> 21.     The
> three things pregnant 
> women dream most of during their first trimester are frogs,
> worms and potted 
> plants. Scientists have no idea why this is so, but
> attribute it to the growing 
> imbalance of hormones in the body during pregnancy.
> 
> 
> 22.     The
> life span of a human 
> hair is 3 to 7 years on average. Every day the average
> person loses 60-100 
> strands of hair. But don't worry, you must lose over 50%
> of your scalp hairs 
> before it is apparent to anyone. 
> 
> 23.     The
> human brain cell can 
> hold 5 times as much information as an encyclopedia.
> 
> Your brain uses 20% of the oxygen
> that enters your 
> bloodstream, and is itself made up of 80% water. Though it
> interprets pain 
> signals from the rest of the body, the brain itself cannot
> feel pain. 
> 
> 
> 24.     The
> tooth is the only part 
> of the human body that can't repair itself. 
> 
> 25.     Your
> eyes are always the 
> same size from birth but your nose and ears never stop
> growing. 
> 
> 
> 26.     By 60
> years of age, 60% of 
> men and 40% of women will snore. 
> 
> 27.     We
> are about 1 cm taller 
> in the morning than in the evening, because during normal
> activities during the 
> day, the cartilage in our knees and other areas slowly
> compress. 
> 
> 
> 28.     The
> brain operates on the 
> same amount of power as 10-watt light bulb, even while you
> are sleeping. In 
> fact, the brain is much more active at night than during the
> day. 
> 
> 
> 29.     Nerve
> impulses to and from 
> the brain travel as fast as 170 miles per hour. Neurons
> continue to grow 
> throughout human life. Information travels at different
> speeds within different 
> types of neurons. 
> 
> 30.     It is
> a fact that people 
> who dream more often and more vividly, on an average have a
> higher Intelligence 
> Quotient. 
> 
> 31.     The
> fastest growing nail 
> is on the middle finger. 
> 
> 32.    
> Facial hair grows faster 
> than any other hair on the body. This is true for men as
> well as women. 
> 
> 
> 33.     There
> are as many hairs 
> per square inch on your body as a chimpanzee. 
> 
> 34.     A
> human fetus acquires 
> fingerprints at the age of three months. 
> 
> 35.     By
> the age of 60, most 
> people will have lost about half their taste buds.
> 
> 
> 36.     About
> 32 million bacteria 
> call every inch of your skin home. But don't worry, a
> majority of these are 
> harmless or even helpful bacteria. 
> 
> 37.     The
> colder the room you 
> sleep in, the higher the chances are that you'll have a
> bad dream. 
> 
> 
> 38.     Human
> lips have a reddish 
> color because of the great concentration of tiny capillaries
> 
> 
> just below the skin. 
> 
> 
> 39.     Three
> hundred million 
> cells die in the human body every minute. 
> 
> 40.     Like
> fingerprints, every 
> individual has an unique tongue print that can be used for
> identification. 
> 
> 
> 41.     A
> human head remains 
> conscious for about 15 to 20 seconds after it has been
> decapitated. 
> 
> 
> 42.     It
> takes 17 muscles to 
> smile and 43 to frown. 
> 
> 43.    
> Humans can make do longer 
> without food than sleep.  Provided there is water, the
> average human could 
> survive a month to two months without food depending on
> their body fat and other 
> factors.  Sleep deprived people, however, start
> experiencing radical 
> personality and psychological changes after only a few
> sleepless days. The 
> longest recorded time anyone has ever gone without sleep is
> 11 days, at the end 
> of which the experimenter was awake, but stumbled over
> words, hallucinated and 
> frequently forgot what he was doing. 
> 
> 44.     The
> most common blood type 
> in the world is Type O. The rarest blood type, A-H or Bombay
> blood, due to the 
> location of its discovery, has been found in less than
> hundred people since it 
> was discovered 
> 
> 45.     Every
> human spent about 
> half an hour after being conceived, as a single cell.
> Shortly afterward, the 
> cells begin rapidly dividing and begin forming the
> components of a tiny embryo. 
> 
> 
> 46.    
> Right-handed people live, 
> on average, nine years longer than left-handed people do. 
> 
> 
> 47.     Your
> ears secrete more 
> earwax when you are afraid than when you aren't.
> 
> 
> 48.    
> Koalas and primates are 
> the only animals with unique fingerprints. 
> 
> 49.    
> Humans are the only 
> animals to produce emotional tears. 
> 
> 50.     The
> human heart creates 
> enough pressure to squirt blood 30 feet in the air

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