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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.