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aorta

Pronunciation: ā-ōr′tă, ā-ōr′tē

Definition: A large artery of the elastic type that is the main trunk of the systemic arterial system, arising from the base of the left ventricle and ending at the left side of the body of the fourth lumbar vertebra by dividing to form the right and left common iliac arteries. The aorta is subdivided into: ascending aorta; aortic arch; and descending aorta, which is in turn, divided into the thoracic aorta and the abdominal aorta.

Synonym(s): arteria aorta

[Mod. L. fr. G. aortē, from aeirō, to lift up]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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