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Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances. Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances.
Summation of Heart Sounds, Pulmonic Ejection Click Summation of Heart Sounds, Pulmonic Ejection Click
Summation of Heart Sounds, Variable S1 Summation of Heart Sounds, Variable S1
Heart Sounds Heart Sounds
Changes in Timbre of Sounds with Changes in Elevation Changes in Timbre of Sounds with Changes in Elevation
Auscultatory sounds: Posterior thorax Auscultatory sounds: Posterior thorax
Video: Osteoporosis

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