2 4 THORAX 



duced by the left phrenic nerve and the accompanying vessels 



Scalenus anterior 



Brachial nerves 



Left subclavian artery 



Left subclavian vein 



Left subclavian artery 

 Left vagus nerve 



Left common 

 carotid artery 

 Left innominate vein 

 Internal mammary 

 artery 



Phrenic nerve and 

 accompanying 

 arter 



Pulmonary 

 artery 



Heart and 

 pericardium 



Thoracic duct 



CEsophagu* 



Recurrent nerve 



Aortic arch 



it cage 

 parietal 



Eleura 

 )escending 

 thoracic 



FIG. ii. The Left Pleural Chamber opened up by the removal of its lateral 

 wall. The lung has been taken away and a window has been made 

 into the superior mediastinum by the removal of a portion of the medias- 

 tinal pleura. Several of the structures which form the mediastinal 

 partition are seen shining through the mediastinal pleura which is in situ. 



