11 10 



12 



13 



Fig. 68. DISSECTION OF THE THORAX. i, Left internal mammary artery. 2, Left 

 internal mammary vein. 3, Left subclavian vein, resting upon first rib. 4, Brachial plexus. 

 5, Left internal jugular. 6, Phrenic nerve, left. 7, Left pneumogastric nerve. 8, Left 

 common carotid artery. 9 and n, Inferior thyroid veins. 10, Trachea. 12, Right internal 

 jugular vein. 13, Right subclavian vein, resting upon first rib. 14, Right inferior thyroid 

 vein. 15, Right innominate vein. 16, Right internal mammary artery. 17, Right internal 

 mammary vein. 18, Diaphragm. 19, Knsiform appendix. 



