Saturday, January 29, 2011
interesting facts about the human body
The average human brain contains about 100 billion nerve cells.
It is impossible to sneeze with your eyes open.
It takes about 72 muscles to produce human speech.
The average life span of a taste bud is only ten days.
The average cough comes out of your mouth at 60 miles per hour.
We are born without knee caps; they don't appear until 2-6 years of age.
Children grow faster in the springtime.
It takes an hour for your stomach to break down cow milk.
Our eyes stay the same size throughout life, but our nose and ears never stop growing.
The average surface length of your intestines is 665 feet.
The average human will shed over forty pounds of skin in their lifetime,
We are born with 300 bones, but only end up with 206 when we are adults.
Each square inch of human skin consists of 20 feet of blood vessels.
During a 24 hour period the average human with breathe 23,040 times.
Human thigh bones are stronger then concrete.
Our skulls are made up of 26 different bones.
Hair is made of the same substances as fingernails.
Women blink twice as many times in men.
Right handed people on average, live nine years longer then left handed people.
The total length of eyelash shed in a lifetime is over 98 feet.
Our heads weigh and average of eight pounds.
The strongest muscle in the human body is the tongue.
When we sneeze, our entire bodily functions stop, even our heart beat.
Blondes have more hair per inch then dark color haired people.
In a lifetime, a human will walk the length of five times around the equator.
Our heart creates enough pressure to shoot blood thirty feet straight up in the air.
An average human swallows 295 times while eating dinner.
The typical person goes to the bathroom six times a day.
The hardest bone in the body is the jawbone.
There are over 500 hairs in an eyebrow.
Over a lifetime your heart will rest for twenty years.
It takes food seven seconds to get to your mouth to your stomach.