Right common carotid aery arises from:

The arch of the aoa is a continuation of the ascending aoa.It lies behind the manubrium sterni and arches upward, backward, and to the left in front of the trachea (its main direction is backward).It then passes downward to the left of the trachea and, at the level of the sternal angle, becomes continuous with the descending aoa.BranchesThe brachiocephalic aery divides into the right subclan and right common carotid aeries behind the right sternoclavicular joint.The left common carotid aery runs upward and to the left of the trachea and enters the neck behind the left sternoclavicular joint.The left subclan aery runs upward along the left side of the trachea and the esophagus to enter the root of the neck. It arches over the apex of the left lung.