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mi'tral valve"

the valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue, that prevents the blood from flowing back into the atrium. Also called bicuspid valve. Cf. tricuspid valve.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

mitral stenosismitre
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