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The familiar sounds of your heart are made by the heart's valves as they open and close.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
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.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.