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The familiar sounds of your heart are made by the heart's valves as they open and close.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Medication errors are three times higher among children and infants than with adults.
Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.