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Did you know?
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Did you know?
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.