|
|
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
![Alexander Fleming photographed in his lab where he observed the natural competition between a fungus](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_20_13_100452376.jpeg)
![Xenophon (430–357 B.C.E.) Biographer of Socrates and his student as a youth. In addition to four ...](https://biology-forums.com/gallery/47/medium_623834_08_12_16_11_51_13_24251208.jpeg)