section of the aorta between the ascending aorta and the descending aorta. Arteries to the arms and head branch off here Back to the top

the curved portion between the ascending and descending parts of the aorta; it begins as a continuation of the ascending aorta posterior to the sternal angle, runs posteriorly and slightly to the left as it passes over the root of the left lung, and becomes the descending aorta as it reaches and begins to course along the vertebral column; it gives rise to the brachiocephalic trunk, the left common carotid and left subclavian arteries.

the curved portion of the aorta (the large blood vessel that carries oxygen-rich blood away from the heart to the body).

The portion of the aorta which bends over inorder to extend into the thorax. image