the part of the aorta prior to the aortic arch from which arise the coronary arteries. Syn: aorta ascendens, ascending part of aorta, pars ascendens aortae.
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the part of the aorta prior to the aortic arch from which arise the coronary arteries. Syn: aorta ascendens, ascending part of aorta, pars ascendens aortae.