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Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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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).

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Approximately 500,000 babies are born each year in the United States to teenage mothers.

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Fluorescent Nanotubes Mouse Fluorescent Nanotubes Mouse
Brain cells of a laboratory mouse are shown glowing with multicolor fluorescent proteins Brain cells of a laboratory mouse are shown glowing with multicolor fluorescent proteins
Mouse-ear Chickweed Mouse-ear Chickweed
When the cover is removed from the top of the engine, a mouse or some other animal nest is ... When the cover is removed from the top of the engine, a mouse or some other animal nest is ...
Y U NO ... Ask a Question? (Animated) Y U NO ... Ask a Question? (Animated)
Video: Sister chromatids of a metaphase chromosome animation

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