The portion of the left ventricular outflow tract delineated by the sinotubular ridge superiorly and the bases of the valve leaflets inferiorly; it comprises the aortic sinuses, the aortic valve leaflets, the commissures, and the interleaflet triangles.
Synonyms:
exact_synonym:
aorta bulb; aortic bulb; aortic root; bulb of ascending aorta; bulbus aortae; root of aorta; supraaortic valve area