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The familiar sounds of your heart are made by the heart's valves as they open and close.
The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.
Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").