heart valve

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Related to Atrioventricular valves: Semilunar valves

heart valve

[′härt ‚valv]
(anatomy)
Flaps of tissue that prevent reflux of blood from the ventricles to the atria or from the pulmonary arteries or aorta to the atria.
References in periodicals archive ?
Defects in the crest of the interventricular septum, the atrioventricular valves, and outflow tracts make up the majority of congenital heart defects observed in infants.
Beside these changes insufficiency of both atrioventricular valves (tricuspid valve, mitral valve) may occur.
Transesophageal echocardiogram showed a dilated hypokinetic systemic ventricle, normally functioning subpulmonic ventricle, mild regurgitation of the systemic and pulmonic atrioventricular valves, and a patent baffle measuring 8 mm in minimal diameter with a small fenestration (Figure 2).