1) The
human brain stops growing at the age of 18.
2) It takes an interaction of 72 different
muscles to produce human speech.
3) Blood is red only in the arteries after it
has left the heart when it is full of oxygen. It is purplish blue color in
the veins as it returns to the heart. When cut, the blood always appears red
because it is instantly exposed to oxygen outside the body.
4) During his or her lifetime, the average
human will grow 590 miles of hair.
5) The average human bladder can hold 13 ounces
of liquid.
6) Your thumb is the same length as your nose.
7) Every person has a unique tongue print.
8) The storage capacity of human brain exceeds
4 terabytes.
9) The substance that human blood resembles
most closely in terms of chemical composition is sea water.
10) The right lung takes more air that the left
lung.
11) A women's heart beats faster than a man's.
12) There brain requires 25 percent of all
oxygen used by the body.
13) There are 10 trillion living cells in the
human body.
14) Females have 500 more genes than males and
because of this, they are protected from things like color blindness and
hemophilia.
15) 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.
16) If you combined all the muscles in an
average human in to one muscle, the force it would be capable of producing
is about 2000 tones.
17) Human thigh bones are stronger than
concrete.