The human head contains 22 bones.
Human body smell is as distinctive and individual as a fingerprint and is unique to family groups.
Red blood cells live for about 120 days.The human brains consists of more than 100 billion neurons (nerve cells).
The nerve impulses travel at more than 400 km/h (250 mph).
The average human has much hair as the other hairy primates, but only it is short and fine.
It takes about 20 seconds for a red blood cell to circle the whole body.
The brain consumes more energy than any other organ (one-fifth of the total food we take in).