Not a direct branch of aoa
High-Yield Explanation
ARCH OF AOA BRANCHES Arch of aoa is the continuation of the ascending aoa.It is situated in the superior mediastinum behind the lower half of the manubrium sterni. BRANCHES 1.Brachiocephalic aery which divides into the right common carotid and right subclan aeries. 2.Left common carotid aery 3.Left suclan aery REF.BDC VOL.1,FIFTH EDITION