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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.