Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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There are 20 feet of blood vessels in each square inch of human skin.
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Thyroid conditions may make getting pregnant impossible.
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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.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
(A) Closed (or simple) fracture and (B) open (or compound) fracture.
a) Lunge with your legs open to the table. b) Avoid lunging with your legs close to table.
Coronary arteries and major vessels (A) anterior (B) posterior.