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Definition of Valve, mitral

Valve, mitral: One of the four valves of the heart, the mitral valve is situated between the left atrium and the left ventricle. It permits blood to flow one way: from the left atrium into the left ventricle. The mitral valve has two flaps (cusps) and so is called "mitral" because it looks like a bishop's miter or headdress. Also known as the bicuspid valve.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=6253
Last Editorial Review: 6/14/2012

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