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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?
Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
Did you know?
Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Your heart beats over 36 million times a year.

