It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Tonsils—normal and enlarged.
Normal combustion is a smooth, controlled burning of the air–fuel mixture.
A) Normal bronchiole and (B) bronchiole constricted in asthma attack.
Nitrogen Balance and Imbalance
Fluid–solute balance in freshwater and marine bony fishes