2nd layer Aorta and its three branches---brachiocephalic trunk ---left common carotid artery ---left subclavian artery Right and left phrenic and vagus nerves Left recurrent laryngeal nerves Vagus nerve Recurrent laryngeal nerves Recurrent laryngeal nerves Phrenic nerve Righ Lett vagus Left Subclavian vein brachiocephalic vein Right brachiocephalic Vagus nerve 白ophagus with plexus vein crossing aortic arch Figure 1.41.Right and f vagus.nerve branches,and their relations to trachea and esophagus Superior vena cava Phrenic nerves2nd layer ◆Aorta and its three branches---brachiocephalic trunk ---left common carotid artery ---left subclavian artery ◆ Right and left phrenic and vagus nerves ◆ Left recurrent laryngeal nerves