View Full Version : Facts about The Human Body

07-21-2008, 09:08 AM
1. A human being loses an average of 40 to 100 strands of hair a day.

2. A cough releases an explosive charge of air that moves at speeds up to 60 mph.

3. Every time you lick a stamp, you're consuming 1/10 of a calorie.

4. A fetus acquires fingerprints at the age of three months.

5. A sneeze can exceed the speed of 100 mph.

6. Every person has a unique tongue print.
According to German researchers, the risk of heart attack is higher on Monday than any other day of the week.

7. After spending hours working at a computer display, look at a blank piece of white paper. It will probably appear pink.

8. An average human drinks about 16,000 gallons of water in a lifetime.

9. A fingernail or toenail takes about 6 months to grow from base to tip.

10. An average human scalp has 100,000 hairs.

11. It takes 17 muscles to smile and 43 to frown.

12. Babies are born with 300 bones, but by adulthood we have only 206 in our bodies.

13. Beards are the fastest growing hairs on the human body. If the average man never trimmed his beard, it would grow to nearly 30 feet long in his lifetime.

14. By age sixty, most people have lost half of their taste buds. By the time you turn 70, your heart will have beat some two-and-a-half billion times (figuring on an average of 70 beats per minute.)

15. Each square inch of human skin consists of twenty feet of blood vessels.

16. Every human spent about half an hour as a single cell.

17. Every person has a unique tongue print. Every square inch of the human body has an average of 32 million bacteria on it.

18. Fingernails grow faster than toenails.

19. Humans shed about 600,000 particles of skin every hour - about 1.5 pounds a year. By 70 years of age, an average person will have lost 105 pounds of skin.

20. 50,000 of the cells in your body will die and be replaced with :new cells, all while you have been reading this sentence!

21. In one hour, your heart works hard enough to produce the equivalent energy to raise almost 1 ton of weight 1 yard off :the ground.

22. Scientists have counted over 500 different liver functions.

23. In 1 square inch of skin there lies 4 yards of nerve fibers, 1300 nerve cells, 100 sweat glands, 3 million cells, and 3 yards of blood vessels.

24. The structural plan of a whale's, a dog's, a bird's and a man's 'arm' are exactly the same. : :The world's first test-tube twins were born in June 1981.

25. There are 45 miles of nerves in the skin of a human being.In a year, a person`s heart beats 40,000,000 times.

26. Most people blink about 25 times a minute.

27. Each square inch of human skin consists of twenty feet of :blood vessels. : :Nerve impulses to and from the brain travel as fast as 170 :miles per hour.

28. Your stomach has to produce a new layer of mucus every two weeks otherwise it will digest itself.

29. Your left lung is smaller than your right lung to make room for :your heart.

30. Every two thousand frowns :creates one wrinkle.

31. The average human blinks his eyes 6,205,000 times each year.

32. The average human produces a quart of saliva a day or 10,000 gallons in a lifetime.

33. The average human's heart will beat 3,000 million times in their lifetime. The average human will pump 48 million gallons of blood in :their lifetime. : :You burn 26 calories in a one-minute kiss.

34. The average human body contains enough: Sulphur to kill all fleas on an average dog, Carbon to make 900 pencils, Potassium to fire :a toy cannon, Fat to make 7 bars of soap, Phosphorus to make :2,200 matchheads, and enough Water to fill a ten-gallon tank.

35. Among the first known "dentists" of the world were the Etruscans. :In 700 BC they carved false teeth from the teeth of various :mammals :and produced partial bridgework good enough to eat with.

36. Ophthalmic surgery was one of the most advanced areas of medicine in the ancient world. Detailed descriptions of delicate cataract surgery with sophisticated needle syringes is contained in the medical writings of Celsus (A.D.14-37)

37. If you were freeze-dried, 10% of your body weight would be from :the microorganisms on your body. According to the World Health Organization, there are :approximately 100 million acts of sexual intercourse each day.

38. Your ears and nose continue to grow throughout your entire life. :

39. When you eat meat and drink milk in the same meal, your body does not absorb any of the milk's calcium. It is best to have 2 hours between the milk and meat intake.

40. Only humans and horses have hymens.

41. The tooth is the only part of the human body that can't repair itself.

42. Every human spent about half an hour as a single cell. :

43. One human brain generates more electrical impulses in a single day than all of the world's telephones put together.

44. We have a a whole pharmacy within us. We can create any drug inside us.

45. Our bodies are recreating themselves constantly - we ,make a skeleton every 3 months, new skin every month. We are capable of reversing the Aging Process!!

46. Hiccups happen when the diaphragm, the muscle that controls our breathing, becomes irritated and start to spasm and contract uncontrollably. With each contraction, air is pulled into the lungs very quickly, passes through the voice box, and then the epiglottis closes behind the rush of air, shaking the vocal chords, causing the "hic" sound. The irritation can be caused by rapid eating, emotional stress and even some diseases. The best cure? Breathing into a paper bag. This calms the diaphragm by increasing the amount of carbon dioxide in your bloodstream.

47. The length from your wrist to your elbow is the same as the length of your foot.

48. Your mouth produces 1 litre (1.8 pints) of saliva a day.

49. On average, people can hold their breath for about one minute. The world record is 15 minutes 2 seconds, by Tom Sietas..

50. On average, you breathe 23,000 times a day.

51. On average, you speak almost 5,000 words a day - although almost 80% of speaking is self-talk (talking to yourself).

52. Einstein's brain was of average size (1375 grams - 49oz).

53. Over the last 150 years the average height of people in industrialised nations increased by 10 cm (4 in).

54. In the 19th century, American men were the tallest in the world, averaging 1,71m (5'6"). Today, the average height for American men is 1,75m (5'7"), compared to 1,77m (5'8") for Swedes, and 1,78m (5'8.5") for the Dutch.

55. If the amount of water in your body is reduced by just 1%, you'll feel thirsty.

56. A person can live without food for about a month, but only about a week without water.

57. A person remains conscious for eight seconds after being decapitated.

58. The muscle that lets your eye blink is the fastest muscle in your body. It allows you to blink 5 times a second. On average, you blink 15 000 times a day. Women blink twice as much as men.

59. A typical athlete's heart churns out 25 to 30 litres (up to 8 gallons) of blood per minute.

60. We have four basic tastes. The salt and sweet taste buds are at the tip of the tongue, bitter at the base, and sour along the sides.

61. Not all our taste buds are on our tongue; about 10% are on the palette and the cheeks.

62. On average a hiccup lasts 5 minutes.

63. Fingernails grow nearly 4 times faster than toenails.

64. It takes about 3 months for the transplanted hair to start growing again.

65. About 13% of people are left-handed. Up from 11% in the past.

66. A newborn baby's head accounts for one-quarter of its weight.

67. Our eyes are always the same size from birth.

68. If all your DNA is stretched out, it would reach to the moon 6,000 times.

69. Approximately two-thirds of a person's body weight is water. Blood is 92% water. The brain is 75% water and muscles are 75% water.

70. The coloured part of the eye is called the iris. Behind the iris is the soft, rubbery lens which focuses the light on to a layer, called the retina, in the back of the eye. The retina contains about 125 million rods and 7 million cones. The rods pick up shades of grey and help us see in dim light. The cones work best in bright light to pick up colours.

71. We actually do not see with our eyes - we see with our brains. The eyes basically are the cameras of the brain. One-quarter of the brain is used to control the eyes.

72. Bones are 4 times stronger than concrete.

73. The largest muscle in your body is the one you are sitting on.

74. Can you feel the pulse in your wrist? For humans the normal pulse is 70 heartbeats per minute. Elephants have a slower pulse of 27 and for a canary it is 1000!

75. If all the blood vessels in your body were laid end to end, they would reach about 60,000 miles.

76. Coughing can cause air to move through your windpipe faster than the speed of sound — over a thousand feet per second!

77. Germs only cause disease, right? But a common bacterium, E. Coli, found in the intestine helps us digest green vegetables and beans (also making gases – pew!). These same bacteria also make vitamin K, which causes blood to clot. If we didn’t have these germs we would bleed to.

78. The average red blood cell lives for 120 days.

79. There are 2.5 trillion (give or take) of red blood cells in your body at any moment. To maintain this number, about two and a half million new ones need to be produced every second by your bone marrow.That's like a new population of the city of Toronto every second.

80. Considering all the tissues and cells in your body, 25 million new cells are being produced each second. That's a little less than the population of Canada - every second !

81. A red blood cell can circumnavigate your body in under 20 seconds.

82. Nerve Impulses travel at over 400 km/hr (250 mi/hr).

83. Our blood is on a 60,000-mile journey.

84. Our eyes can distinguish up to one million colour surfaces and take in more information than the largest telescope known to man.

85. Our lungs inhale over two million litres of air every day, without even thinking. They are large enough to cover a tennis court.

86. When we touch something, we send a message to our brain at 124 mph

87.. We give birth to 100 billion red cells every day.

88. Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities.

89. 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.

90. We have copper, zinc, cobalt, calcium, manganese, phosphates, nickel and silicon in our bodies.

91. It is believed that the main purpose of eyebrows is to keep sweat out of the eyes.

92. A person can expect to breathe in about 40 pounds of dust over his/her lifetime.

93. A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realises it's there.

94. The human body has 230 movable and semi- movable joints.

95. Our Brain has over 100 billion nerve cells.

96. The length of human blood vessel is such that it circles the globe 2 ˝ times.

97. The palms of the hands and soles of the feet contain more sweat glands than other parts of the body.

98. An average human body contains enough amount of fat to make seven bars of soap.

99. On an average the human body contains enough water to fill 1 gallon of a tank.

100. The human body releases growth hormones during sleep.

101. Red blood cells are about seven micrometer in diameter.

102. The thighbone is so strong that it withstands the axial load of about 1600-1800 kilos.

103. The human heart continues to beat even though it is taken out of the body or cut in to pieces.

104. In an average person, it takes 8 seconds for food to travel down the food pipe,3-5 hours in small intestine and 3-4 days in large intestine.

105. The brain continues to send out electric wave signals until approximately 37 hours after death.

106. Human bone is as strong as steel but 50 times lighter

107. The brain is faster than a super computer processing billions of signals per second. Vishwanath Ananad the Indian Chess grandmaster has many times beaten the computer at chess.

108. Human eye is the only multifocus lens in the world which can adjust in 2 milliseconds

109. The gastric acid in your stomach is so powerful that it is able to eat away an iron table in about 5 minutes.

More to come soon..........................