aortic vestibule (anatomy)

Last reviewed 01/2018

The aortic vestibule is the superior region of the left ventricle which lies just inferior to the aortic orifice. It forms part of the outflow tract of the chamber and it is correspondingly smooth-walled. Passing superiorly, its walls increasingly consist of fibrous tissue. It lies intermediate to the smooth part of the interventricular wall and the anterior cusp of the mitral valve.