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Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Close-up of a cat's claw, with the quick clearly visible Close-up of a cat's claw, with the quick clearly visible
Atherosclerosis. (a) A sectioned coronary artery that exhibits an accumulation of fatty plaque, whic Atherosclerosis. (a) A sectioned coronary artery that exhibits an accumulation of fatty plaque, whic
In Chuck Close's portrait, the face is quite recognizable when viewed from a distance. Close ... In Chuck Close's portrait, the face is quite recognizable when viewed from a distance. Close ...
Medical assistant shaking hands with the interviewer at the close of the interview. Medical assistant shaking hands with the interviewer at the close of the interview.
Close-up of a flat-disc amplifier (left) and a bell amplifier (right) Close-up of a flat-disc amplifier (left) and a bell amplifier (right)
Close-up of a newly created enzyme degrading PET plastic Close-up of a newly created enzyme degrading PET plastic
Video: Introduction to Genetics

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