Interesting Facts about Human Body

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by AdelaSev
Last updated 6 years ago

Discipline:
Science
Subject:
Human Anatomy

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Interesting Facts about Human Body

Interesting facts about human body...

Aging and Death

The ashes of a cremated person average about 9 pounds. .Nails and hair do not continue to grow after we die. By the age of 60, most people will have lost about half their taste buds. Your eyes are always the same size from birth but your nose and ears never stop growing. By 60 years of age, 60-percent of men and 4-percent of women will snore. A baby’s head is one-quarter of it’s total length, but by age 25 will only be one-eighth of its total length.

Women blink twice as many times as men do.

BrainNerve impulses to and from the brain travel as fast as 170 miles per hour. The brain operates on the same amount of power as 10-watt light bulb. The human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Your brain uses 20% of the oxygen that enters your bloodstream. The brain is much more active at night than during the day.Scientists say the higher your I.Q. the more you dream. Neurons continue to grow throughout human life. Information travels at different speeds within different types of neurons. The brain itself cannot feel pain.80% of the brain is water.

Reproduction

The largest cell in the human body is the female egg and the smallest is the male sperm. The three things pregnant women dream most of during their first trimester are frogs, worms and potted plants. Your teeth start growing 6 months before you are born. Babies are always born with blue eyes. Babies are, pound for pound, stronger than an ox. One out of every 2,000 newborn infants has a tooth when they are bornA fetus acquires fingerprints at the age of three months. Every human spent about half an hour as a single cell.

Facial hair grows faster than any other hair on the body. Every day the average person loses 60-100 strands of hair. Women’s hair is about half the diameter of men’s hair.One human hair can support 3.5 ounces. The fastest growing nail is on the middle finger. There are as many hairs per square inch on your body as a chimpanzee. Blondes have more hair. Fingernails grow nearly 4 times faster than toenails. You must lose over 50% of your scalp hairs before it is apparent to anyone.

Feet have 500,000 sweat glands and can produce more than a pint of sweat a day. And during your lifetime, you will produce enough saliva to fill two swimming pools.

Hair and nails

It takes 17 muscles to smile and 43 to frown. Babies are born with 300 bones, but by adulthood the number is reduced to 206. We are about 1 cm taller in the morning than in the evening. The strongest muscle in the human body is the tongue. The hardest bone in the human body is the jawbone. You use 200 muscles to take one step. The tooth is the only part of the human body that can’t repair itself. It takes twice as long to lose new muscle if you stop working out than it did to gain it. Bone is stronger than some steel. The feet account for one quarter of all the human body’s bones.

Muscles and Bones

About 32 million bacteria call every inch of your skin home. Humans shed and regrow outer skin cells about every 27 days.Three hundred million cells die in the human body every minute. Every day an adult body produces 300 billion new cells. Every tongue print is unique. The most common blood type in the world is Type O. Human lips have a reddish color because of the great concentration of tiny capillaries just below the skin.

Monday is the day of the week when the risk of heart attack is greatest. Humans can make do longer without food than sleep. Over 90% of diseases are caused or complicated by stress. A human head remains conscious for about 15 to 20 seconds after it is been decapitated.

SencesAfter eating too much, your hearing is less sharp. If saliva cannot dissolve something, you cannot taste it. Women are born better smellers than men and remain better smellers over life. Your nose can remember 50,000 different scents. Even small noises cause the pupils of the eyes to dilate. Everyone has a unique smell, except for identical twins.

The largest internal organ is the small intestine. The human heart creates enough pressure to squirt blood 30 feet. The acid in your stomach is strong enough to dissolve razorblades. The human body is estimated to have 60,000 miles of blood vessels. You get a new stomach lining every three to four days. The surface area of a human lung is equal to a tennis court. Women’s hearts beat faster than men’s.Scientists have counted over 500 different liver functions. Your left lung is smaller than your right lung to make room for your heart. You could remove a large part of your internal organs and survive. The adrenal glands change size throughout life.

Internal organs

The colder the room you sleep in, the better the chances are that you’ll have a bad dream. Tears and mucus contain an enzyme (lysozyme) that breaks down the cell wall of many bacteria. Your body gives off enough heat in 30 minutes to bring half a gallon of water to a boil. Your ears secrete more earwax when you are afraid than when you aren’t. It is not possible to tickle yourself. Humans are the only animals to produce emotional tears. Right-handed people live, on average, nine years longer than left-handed people do. Women burn fat more slowly than men, by a rate of about 50 calories a day. Koalas and primates are the only animals with unique fingerprints. The indentation in the middle of the area between the nose and the upper lip has a name (philtrum).

The human heart begins beating at a rate near the mother's, about 75 - 80 beats per minute.


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