FACTS

Thought these were really interesting......

MUSCLES
A smile uses 17 muscles while a frown uses 43.
The smallest muscle of the body measures 1/20th of an inch. It's called the stapedius; it activates the stirrup that sends vibrations from the eardrum to the inner ear.
The strongest muscle of the body is in your behind; it's also called the gluteus maximus.
The tongue is also one of the strongest muscles in the body.
BONES
At birth, you have about 300 bones, but as you grow older, small bones join together. Adults end up with about 206 bones.
Almost every seven years, your body replaces the equivalent of an entirely new skeleton.
Laughing and coughing puts more pressure on your spine than walking or standing.
The largest bone is the pelvis, or hip bone.
The smallest bone is the stirrup, deep in the ear. It is hardly larger than a grain of rice.
HEART
If the heart is taken out of the body, it will continue to beat.
The heart pumps more than 300 quarts of blood per hour.
The heart will beat approximately 2.7 billion times in a lifetime.
BLOOD VESSELS & CELLS
There are almost 60,000 miles of blood vessels in the human body.
Red blood cells are formed at the rate of 2 million per second.
Within a tiny droplet of blood, there are 5 million red blood cells, 300,000 platelets and 10,000 white cells.
It takes about 1 minute for a red blood cell to circle the whole body.
BRAIN
The brain continues to send out electrical wave signals until approximately 37 hours after death.
The brain stops growing when you are about 15.
LUNGS
The average person will breathe about 75 million gallons of air in a lifetime.
People under 30 take in twice as much oxygen as people over 80.
The right lung is slightly larger than the left.
A person at rest usually breathes between 12 and 15 times a minute.
Women and children have faster breathing rates than men.
DIGESTIVE SYSTEM
The average male will eat about 50 tons of food during his lifetime to keep a weight of 150 pounds.
It takes the body six hours to digest a high-fat meal versus two hours for a carbohydrate meal.
For the average person, it takes eight seconds for food to travel down the esophagus, three to five hours in the small intestine, and three to four days in the large intestine.
Your stomach produces a new lining every three days in order to avoid digesting itself in its production of acid.
Muscles contract in waves to move food down the esophagus. This means that food would get to a person's stomach, even if he or she were standing on their head.