Fun Trivia about Humanity 2
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
Fingernails grow faster than toenails.
Fingerprints serve a function - they provide traction for the fingers to grasp things.
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.
Humans shed and regrow outer skin cells about every 27 days - almost 1,000 new skins in a lifetime.
If it were removed from the body, the small intestine would stretch to a length of 22 feet.
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
If you go blind in one eye, you'll only lose about one-fifth of your vision (but all your depth perception.)
In a lifetime the average US resident eats more than 50 tons of food and drinks more than 13,000 gallons of liquid.
In the late 19th century, millions of human mummies were used as fuel for locomotives in Egypt where wood and coal was scarce, but mummies were plentiful.
It takes 17 muscles to smile --- 43 to frown.
Intelligent people have more zinc and copper in their hair.
Insomniacs may move as many as seventy times.
Jaw muscles can provide about 200 pounds of force to bring the back teeth together for chewing.
Kids in North America spend close to half a billion dollars annually on chewing gum!
Lab tests can detect traces of alcohol in urine six to 12 hours after a person has stopped drinking.
Laughing lowers levels of stress hormones and strengthens the immune system. Six-year-olds laugh an average of 300 times a day. Adults only laugh 15 to 100 times a day.
Most men have erections every hour to hour and a half during sleep.
The ashes of the average cremated person weigh nine pounds.
The average duration of sexual intercourse for humans is 2 minutes.
The average human body contains enough: iron to make a 3 inch nail, sulfur 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, phosphorous to make 2,200 match heads, and water to fill a ten-gallon tank.
The average human produces 25,000 quarts of spit in a lifetime, enough to fill two swimming pools.
The average person releases nearly a pint of intestinal gas by flatulence every day. Most is due to swallowed air. The rest is from fermentation of undigested food.
The body's largest internal organ is the small intestine at an average length of 20 feet
The feet account for one quarter of all the human bodies bones.
The human body has enough fat to produce 7 bars of soap.
The human body has over 600 muscles, 40% of the body's weight.
The human brain is about 85% water.
The largest cell in the human body is the female ovum, or egg cell. It is about 1/180 inch in diameter. The smallest cell in the human body is the male sperm. It takes about 175,000 sperm cells to weigh as much as a single egg cell.
The largest human organ is the skin, with a surface area of about 25 square feet.
The left lung is smaller than the right lung to make room for the heart.
The little lump of flesh just forward of your ear canal, right next to your temple, is called a tragus.
The longest muscle in the human body is the sartorius. This narrow muscle of the thigh passes obliquely across the front of the thigh and helps rotate the leg to the position assumed in sitting cross-legged. Its name is a derivation of the adjective "sartorial," a reference to what was the traditional cross-legged position of tailors (or "sartors") at work.
The most common blood type in the world is Type O. The rarest, Type A-H, has been found in less than a dozen people since the type was discovered.
The Neanderthal's brain was bigger than yours is.