left atrioventricular orifice

left atrioventricular orifice
ostium atrioventriculare sinistrum.

Medical dictionary. 2011.

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  • Left atrioventricular opening — Latin ostium atrioventriculare sinistrum Gray s subject #139 533 The left atrioventricular opening (mitral orifice) is placed below and to the left of the aortic orifice. It is a little smaller than the corresponding aperture of the opposite side …   Wikipedia

  • Right atrioventricular orifice — Section of the heart showing the ventricular septum. (Right atrioventricular orifice visible at left, but not labeled.) Latin ostium atrioventriculare dextrum Gray s …   Wikipedia

  • Left atrium — Infobox Anatomy Name = PAGENAME Latin = atrium sinistrum GraySubject = GrayPage = Caption = Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. Caption2 = Computer rendering of a human left atrium. Precursor =… …   Wikipedia

  • orifice — Any aperture or opening. SEE ALSO: aperture, opening, os, ostium, meatus. SYN: orificium [TA]. [L. orificium] anal o. SYN: anus. aortic o. [TA] the opening from the left …   Medical dictionary

  • mitral orifice — n the left atrioventricular orifice * * * ostium atrioventriculare sinistrum …   Medical dictionary

  • Cusp — In reference to heart valves, one of the triangular segments of the valve which opens and closes with the flow of blood. In reference to teeth, a raised area of the biting surface. * * * 1. In dentistry, a conical elevation arising on the surface …   Medical dictionary

  • ostium — A small opening, especially one of entrance into a hollow organ or canal. SEE ALSO: orifice, opening, os, mouth (2). [L. door, entrance, mouth] o. abdominale tubae uterinae [TA] SYN: abdominal o. of uterine tube …   Medical dictionary

  • ostium atrioventriculare sinistrum — [TA] left atrioventricular opening: the opening between the left atrium and the left ventricle of the heart, guarded by the left atrioventricular valve; called also mitral orifice and left atrioventricular orifice …   Medical dictionary

  • mitral stenosis — n a condition usu. the result of disease in which the mitral valve is abnormally narrow * * * narrowing of the opening of the mitral valve: a result of chronic scarring that follows rheumatic fever. It may be seen alone or combined with mitral… …   Medical dictionary

  • valve — 1. A fold of the lining membrane of a canal or other hollow organ serving to retard or prevent a reflux of fluid. 2. Any formation or reduplication of tissue, or flaplike structure …   Medical dictionary

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