| umls-concept:C0003489 | skos:definition | NCI: The curved section of the aorta between the ascending and the descending tracts. The brachiocephalic, left common carotid and left subclavian arteries branch from the aorta at this section. (NCI),NCI: The curved section of the aorta between the ascending and the descending tracts. The brachiocephalic, left common carotid and left subclavian arteries branch from the aorta at this section. | lld:umls |
