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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?
Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.