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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
![(a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ...](https://biology-forums.com/gallery/31/medium_398119_11_07_17_2_55_16_31464219.jpeg)
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