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Medicine and Health Trivia

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Blood is red only in the arteries after it has left the heart and is full of oxygen. Blood is a purplish, blue color in the veins as it returns to the heart, thanks to having picked up carbon dioxide and other wastes from the body's cells. In fact, your blood is red throughout only half your body. When cut, of course, the blood always appears red because it is instantly exposed to oxygen outside the body.

Contrary to popular belief, hemophiliacs do NOT bleed to death from minor cuts. This rare disease, which affects only males (it is carried by females, but they don't exhibit symptoms), involves an impairment in blood clotting—not an absolute inability to clot. Hemophiliacs today may take clotting serums and often lead fairly normal lives.

During his or her lifetime, the average human will grow 590 miles of hair.

The average Human bladder can hold 13 ounces of liquid.

You lose enough dead skin cells in your lifetime to fill eight five-pound flour bags.

Your thumb is the same length as your nose.

The storage capacity of human brain exceeds 4 Terrabytes.

The Mad Hatter in Alice in Wonderland was a symbolic character for the hat makers in towns of the late 1800's. The large felt hats of the day had supports made out of lead. The lead caused an organic form of psychosis (brain damage) to develop in the hat makers causing them to be declared crazy.

Although your system cannot digest gum like other foods, it won't be stuck inside of you forever. It comes out with other waste your body can't use.

The substance that human blood resembles most closely in terms of chemical composition is sea water.

The right lung takes in more air than the left lung.

A woman's heart beats faster than a man's.

The brain requires 25 percent of all oxygen used by the body.

There are 10 trillion living cells in the human body.

Females have 500 more genes than males, and because of this are protected from things like color blindness and hemophilia.

Homo sapiens shouldn't feel too high and mighty, even though they currently dominate the Earth. After all, they are covered with flesh that medical scientists have determined bears an important resemblance to Silly Putty. The specific gravity of your skin and the gooey stuff is close enough that doctors have actually used Silly Putty to align and test CAT scan machines.

The short-term memory capacity for most people is between five and nine items or digits. This is one reason that phone numbers were kept to seven digits for so long.

Studies shown by the Psychology Department of DePaul University show that the principal reason to lie is to avoid punishment.

People who have never been married are seven and a half times more likely than married people to be admitted to a psychiatric facility.

Cephalacaudal recapitulation is the reason our extremities develop faster than the rest of us.

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