aortic vestibule


a·or·tic ves·ti·bule

[TA] 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. Synonym(s): vestibulum aortae [TA], Sibson aortic vestibule

a·or·tic ves·ti·bule

(ā-ōr'tik ves'ti-byūl) [TA] 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.

Sibson,

Francis, English anatomist, 1814-1876. Sibson aortic vestibule - the anterosuperior portion of the left ventricle of the heart immediately below the aortic orifice. Synonym(s): aortic vestibuleSibson aponeurosis - Synonym(s): suprapleural membraneSibson fascia - Synonym(s): suprapleural membraneSibson groove - a groove occasionally seen on the outer side of the thorax, formed by the prominent lower border of the pectoralis major muscle.Sibson muscle - an occasional independent muscular fasciculus between the scalenus anterior and medius and having the same action and innervation. Synonym(s): scalenus minimus muscle