aortic arch
Share:
Tweet n. 1. The curved portion of the aorta between the ascending and descending portions that gives rise to the brachiocephalic trunk, the left carotid artery, and the left subclavian artery. 2. One of a series of paired arteries in a vertebrate embryo that connects the ventral arterial system to the dorsal arterial system. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.