Brachiocephalic trunk

  • The brachiocephalic trunk ­(also brachiocephalic artery or innominate artery, latin: truncus brachiocephalicus) is the first and largest branch of the aortic arch that supplies the head, neck and the right arm.

    The brachiocephalic artery arises from the aortic arch at the level of the second right costal cartilage. Then it runs upwards to the right and at the border of the right sternoclavicular joint divides into the right common carotid artery and right subclavian artery.

    Usually, the brachiocephalic artery has only terminal branches, but sometimes the thymic, bronchial branch and thyroidea ima arises from it.