heart valve

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Related to AV valve: aortic valve

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 ?
Pulmonary valve (PV) ejection clicks begin shortly after AV valve closure, vary with respiration and are best heard at the upper left sternal border.
The absence of risk factors for mortality from right isomerism, such as pulmonary venous obstruction, AV valve regurgitation, sepsis or severe arrhythmia, might have contributed to the longevity of this patient.