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Did you know?
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?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
Medication errors are more common among seriously ill patients than with those with minor conditions.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.