The aortic arch is the portion of the main artery that bends between the ascending and descending aorta. It leaves the heart and ascends, then descends back to create the arch. The aorta distributes blood from the left ventricle of the heart to the rest of the body. Certain complications of the aorta may ultimately lead to blocked blood vessels. These blockages restrict blood flow to the rest of the body, which can eventually result in swelling and even an aneurysm. The conditions associated with the aortic arch are: