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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?
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
More than 4.4billion prescriptions were dispensed within the United States in 2016.