50 human mysteries

gurrera

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>
> 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.
>
>
>
> 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 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 a 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,
> hallucinaed, 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 eft-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 into the
>
> air.
>
Gurrera
 
Good read but...The tooth can repair itself. It's been proven, Google it or even youtube it. I can tickle myself lol. U probably wouldn't want to know where. Lol. Finally...how do we know for sure we are the only creatures who produce emotional tears? I've heard animals cry and even seen tears. Without us being able to fully communicate with these animals we truly do not know that to be true and it would only be an assumption. I am surprised that even made the list. That's basic science and common sense...theories have to be proven in order to be fact.
 
Oh yeah my pinky nail definitely grows the fastest. That's a fact. I cut them all at the same time and my pinky fingernail will shoot out and look like a pinky finger of a drug cartel boss. Lol Some of you may not get that one lol.
 
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