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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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There are 20 feet of blood vessels in each square inch of human skin.

Gut bacteria Gut bacteria
Gram positive S. pyogenes bacteria in chains. Gram positive S. pyogenes bacteria in chains.
Muscle weakness caused by myasthenia gravis is evident in the eyes of this patient. Muscle weakness caused by myasthenia gravis is evident in the eyes of this patient.
Time course of HIV infection. Time course of HIV infection.
Use flat fingers to apply L strokes along lateral neck from below the ears toward the terminus and ... Use flat fingers to apply L strokes along lateral neck from below the ears toward the terminus and ...
Finish gently holding the head. Place palms of hands lightly over the ears for a few seconds. Slowly ... Finish gently holding the head. Place palms of hands lightly over the ears for a few seconds. Slowly ...
Video: Bipolar Disorder

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