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Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Taking a Patient's Blood Pressure Taking a Patient's Blood Pressure
Cells Cells
Melanopsin-Containing Ganglion Cells in the Retina Melanopsin-Containing Ganglion Cells in the Retina
Return of oxygenated blood to the heart and entry into the aorta (red = oxygenated blood, blue = ... Return of oxygenated blood to the heart and entry into the aorta (red = oxygenated blood, blue = ...
The blood cells are shown in (a)–(f) and the tissue white blood cells are shown in (g), (h), and ... The blood cells are shown in (a)–(f) and the tissue white blood cells are shown in (g), (h), and ...
Trichomes are hairs or other fine outgrowths of epidermal cells Trichomes are hairs or other fine outgrowths of epidermal cells
Video: Cardiac Cycle (Part 3 of 4)

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