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Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
Did you know?
Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.