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Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Did you know?
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
Did you know?
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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![A permanent epicardial pacemaker. The pulse generator can be placed in subcutaneous pockets in the s](https://biology-forums.com/gallery/47/medium_14755_01_10_12_7_51_31_91872464.jpeg)