ostium arteriosum


left atrioventricular orifice

[TA] an atrioventricular opening that leads from the left atrium into the left ventricle of the heart. Synonym(s): ostium atrioventriculare sinistrum [TA], mitral orifice, ostium arteriosum

ostium arteriosum

The arterial orifice of the ventricle of the heart into the aorta or pulmonary artery.See also: ostium