Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Did you know?
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
