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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?
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?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.