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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).