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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.