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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?
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
Did you know?
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.

