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Author Question: During respiration, the body takes in oxygen and expels A) hydrogen. B) carbon dioxide. C) ... (Read 89 times) |
The longest a person has survived after a heart transplant is 24 years.
The average office desk has 400 times more bacteria on it than a toilet.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).