the anterosuperior portion of the left ventricle of the heart immediately below the aortic orifice, having fibrous walls and affording room for the segments of the closed aortic valve. Syn: Sibson’s aortic vestibule, vestibulum aortae.
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the anterosuperior portion of the left ventricle of the heart immediately below the aortic orifice, having fibrous walls and affording room for the segments of the closed aortic valve. Syn: Sibson’s aortic vestibule, vestibulum aortae.