Dorlands/Elsevier o_09/12601891 FMA 9335 | TA A12.1.04.002 | |
Latin ostium atrioventriculare sinistrum | ||
The left atrioventricular orifice (left atrioventricular opening or 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.
It is surrounded by a dense fibrous ring, covered by the lining membrane of the heart, and is guarded by the bicuspid or mitral valve.
References
Left atrioventricular orifice Wikipedia(Text) CC BY-SA