The familiar sounds of your heart are made by the heart's valves as they open and close.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
The peripheral nerves connect the brain and spinal cord to other parts of the body.
Left-brain thinking.
THE BRAIN
In situ hybridization. This color-coded frontal section through a rat brain reveals high ...