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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?
The human body produces and destroys 15 million blood cells every second.
Did you know?
In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

