The aortic orifice, (aortic opening) is a circular opening, in front and to the right of the
left atrioventricular orifice, from which it is separated by the
anterior cusp of the
bicuspid valve.
It is guarded by the
aortic semilunar valve.
The portion of the ventricle immediately below the aortic orifice is termed the aortic vestibule, and has fibrous instead of muscular walls.
References
External links
Circulatory system
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