Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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