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.
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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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In 1864, the first barbiturate (barbituric acid) was synthesized.