How is normal anatomy of the aorta?

Diameter 3 cm ascending, 2.5 cm descending, 1.7-2 cm abdomen. Wall (thick intima composed of endothelium, subendothelial CT, elastic lamina, thick media of smooth muscles and extracellular matrix, adventitia CT enclosing the vasa vasorum and nervi vascularis) Aorta distended durng systole allows stroke volume and elastic energy to be stored, and recoils during diastole so that blood flows to periphery