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Tuesday, 13 November 2007

some facts abt the human body

1.Scientists have counted over 500 different liver functions.
2.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.
3.The structural plan of a whale's, a dog's, a bird's and a man's 'arm' are exactly the same.
4.The world's first test-tube twins were born in June 1981.
5.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.
5.Most people blink about 25 times a minute.
6.Each square inch of human skin consists of twenty feet of :blood vessels.
7.Nerve impulses to and from the brain travel as fast as 170 miles per hour.
8.Your stomach has to produce a new layer of mucus every two weeks otherwise it will digest itself.
9.Your left lung is smaller than your right lung to make room for your heart.
10.You use an average of 43 muscles for a frown. You use an average of 17 muscles for a smile.
11.Every two thousand frowns creates one wrinkle.
12.The average human blinks his eyes 6,205,000 times each year.
13.The average human produces a quart of saliva a day or 10,000 gallons in a lifetime.
14.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.
15.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.
16.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.