Left atrioventricular opening

Left atrioventricular orifice
Details
Identifiers
Latin	ostium atrioventriculare sinistrum
Dorlands /Elsevier	o_09/12601891
TA	A12.1.04.002
FMA	9335
Anatomical terminology []

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.

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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