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Did you know?
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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![This battery-powered tester uses light-emitting diodes (LEDs), meter lead terminals, and two small ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_1_36_28_29382646.png)