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Old Friday, February 15, 2013
Sib Shaw's Avatar
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Exclamation Quick Facts about Human Body

Quick Facts about Human Body

The human body is an incredibly complex and intricate system, one that still baffles doctors and researchers on a regular basis despite thousands of years of medical knowledge.


1. Nerve impulses to and from the brain travel as fast as 170 miles per hour.
2. The brain operates on the same amount of power as 10-watt light bulb.
3. The human brain cell can hold five times as much information as the Encyclopedia Britannica.
4. Your brain uses 20% of the oxygen that enters your bloodstream.
5. The brain is much more active at night than during the day.
6. Scientists say the higher your IQ the more you dream.
7. Neurons continue to grow throughout human life.
8. Information travels at different speeds within different types of neurons.
9. The brain itself cannot feel pain.
10. Eighty per cent of the brain is water.
11. Facial hair grows faster than any other hair on the body.
12. Every day the average person loses 60-100 strands of hair.
13. Women's hair is about half the diameter of men's hair.
14. One human hair can support 3.5 ounces.
15. The fastest growing nail is on the middle finger.
16. There are as many hairs per square inch on your body as a chimpanzee.
17. Blondes have more hair. Fingernails grow nearly four times faster than toenails.
18. The lifespan of a human hair is 3 to 7 years on average.
19. You must lose over 50% of your scalp hairs before it is apparent to anyone.
20. Human hair is virtually indestructible.
21. The largest internal organ is the small intestine.
22. The human heart creates enough pressure to squirt blood 30 feet.
23. The acid in your stomach is strong enough to dissolve razorblades.
24. The human body is estimated to have 60,000 miles of blood vessels.
25. You get a new stomach lining every three to four days.
26. The surface area of a human lung is equal to a tennis court.
27. Women's hearts beat faster than men's.
28. Scientists have counted over 500 different liver functions.
29. The aorta is nearly the diameter of a garden hose.
30. Your left lung is smaller than your right lung to make room for your heart.
31. You could remove a large part of your internal organs and survive.
32. The adrenal glands change size throughout life.
33. Sneezes regularly exceed 100 mph.
34. Coughs clock in at about 60 mph.
35. Women blink twice as many times as men do.
36. A full bladder is roughly the size of a soft ball.
37. Approximately 75% of human waste is made of water.
38. Feet have 500,000 sweat glands and can produce more than a pint of sweat a day.
39. During your lifetime, you will produce enough saliva to fill two swimming pools.
40. The average person expels flatulence 14 times each day.
41. Earwax production is necessary for good ear health.
42. The largest cell in the human body is the female egg and the smallest is the male sperm.
43. The three things pregnant women dream most of during their first trimester are frogs, worms and potted plants.
44. Your teeth start growing six months before you are born.
45. Babies are always born with blue eyes.
46. Babies are, pound for pound, stronger than an ox.
47. One out of every 2,000 new born infants has a tooth when they are born.
48. A fetus acquires fingerprints at the age of three months.
49. Every human spent about half an hour as a single cell.
50. After eating too much, your hearing is less sharp.
51. About one-third of the human race has 20-20 vision.
52. If saliva cannot dissolve something, you cannot taste it.
53. Women are born better smellers than men and remain better smellers over life.
54. Your nose can remember 50,000 different scents.
55. Even small noises cause the pupils of the eyes to dilate.
56. Everyone has a unique smell, except for identical twins.
57. The ashes of a cremated person average about nine pounds.
58. Nails and hair do not continue to grow after we die.
59. By the age of 60, most people will have lost about half their taste buds.
60. Your eyes are always the same size from birth but your nose and ears never stop growing.
61. By 60 years of age, 60 per cent of men and 40 per cent of women will snore.
62. A baby's head is one-quarter of its total length, but by age 25 will only be one-eighth of its total length.
63. Humans can make do longer without food than sleep.
64. A simple, moderately severe sunburn damages the blood vessels extensively.
65. Over 90% of diseases are caused or complicated by stress.
66. A human head remains conscious for about 15 to 20 seconds after it is been decapitated.
67. It takes 17 muscles to smile and 43 to frown.
68. Babies are born with 300 bones, but by adulthood the number is reduced to 206.
69. We are about 1 cm taller in the morning than in the evening.
70. The strongest muscle in the human body is the tongue.
71. The hardest bone in the human body is the jawbone.
72. You use 200 muscles to take one step.
73. The tooth is the only part of the human body that can't repair itself.
74. It takes twice as long to lose new muscle if you stop working out than it did to gain it.
75. Bone is stronger than some steel.
76. The feet account for one quarter of all the human body's bones.
77. About 32 million bacteria call every inch of your skin home.
78. Humans shed and regrow outer skin cells about every 27 days.
79. Three hundred million cells die in the human body every minute.
80. Humans shed about 600,000 particles of skin every hour.
81. Every day an adult body produces 300 billion new cells.
82. Every tongue print is unique.
83. Your body has enough iron in it to make a nail 3 inches long.
84. The most common blood type in the world is Type O.
85. Human lips have a reddish color because of the great concentration of tiny capillaries just below the skin.
86. Tears and mucus contain an enzyme (lysozyme) that breaks down the cell wall of many bacteria.
87. Your body gives off enough heat in 30 minutes to bring half a gallon of water to a boil.
88. Your ears secrete more earwax when you are afraid than when you aren’t.
89. The width of your arm span stretched out is the length of your whole body.
90. Humans are the only animals to produce emotional tears.
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Old Friday, February 15, 2013
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some points need correction.
e.g
42-largest cell of human body is neuron
60-ear and nose do not grow thorough out the life.
45-eye colour is hereditary so it is not possible that every child born with blue eyes.
84-most common blood group is B not 0. O is universall donor but not most common
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