Aortic arch anatomy variations in human

The aortic arch can be characterized into three types based on the vertical distance from the origin of the innominate artery to the top of the arch
Type A-. A type 1 arch has a distance that is less than one times the diameter of the left common carotid artery (CCA). A type 2 arch originates from one to two CCA diameters from the top of the arch, and a type 3 arch originates more than 2 CA diameters from the top of the arch
Type B and C -Left common carotid artery from innominate artery
 Type D-True bovine arch
Type E-Arteria lusoria