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Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.