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There are more nerve cells in one human brain than there are stars in the Milky Way.
Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.
It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Excessive alcohol use costs the country approximately $235 billion every year.
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.
![Comparison of the chemical structures of psilocybin and LSD. Psilocybin (left) is derived from a mus](https://biology-forums.com/gallery/47/medium_46687_17_12_14_12_27_14_19605951.jpeg)
![The wide distribution of left hemisphere sites where cortical stimulation either blocked speech or ...](https://biology-forums.com/gallery/30/medium_548020_07_06_17_2_32_33_30434122.png)