Aortic opening

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Aortic opening
Latin ostium aortae
Gray's subject #138 534
Dorlands/Elsevier o_09/12601868

The aortic opening (aortic orifice) is a circular aperture, in front and to the right of the atrioventricular, from which it is separated by the anterior cusp of the bicuspid valve.

Its orifice is guarded by the aortic semilunar valves.

The portion of the ventricle immediately below the aortic orifice is termed the aortic vestibule, and possesses fibrous instead of muscular walls.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.