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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?
Medication errors are more common among seriously ill patients than with those with minor conditions.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.