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Author Question: _________ NOT part of the digestive system. A) The teeth are B) The esophagus is C) The ... (Read 25 times) |
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
There are 20 feet of blood vessels in each square inch of human skin.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.