5 2 



THORAX 



and behind the lower and posterior part of the pericardial 

 area on the right lung is a secondary depression due to the 

 upper part of the inferior vena cava. Posterior to the 

 pericardial area and the hilum there is a narrow strip of the 



Remains of thymus 

 Internal mammary vessels 



Manubrium sterni 



j First costal cartilage 



Skin 



Pectoralis major . ~^^~ ' >^^*^;^*^ 



*-^~^. _^^^;"^2-^=~^ 



Cavity of left pleura . 

 Left innominate vein 



Left phrenic nerve 5 % 



Innominate artery ?!? 



Left sup. intercostal vein 

 Left vagus nerve 

 Left common carotid y- - 

 artery "^ 

 Lymph gland 

 Left subclavian artery 



Thoracic duct 



Cavity of left pleura 



Cavity of right pleura 



Right phrenic nerve 

 Right innominate 

 vein 



I_ Lymph glands 



_^__ Trachea 

 ':'* . 



Right vagus nerve 



Left recurrent nerve 



(Esophagus 



Third thoracic 

 vertebra 



Fourth rib 



Cavity of right pleura 



^r= Fifth rib 



FIG. 22. Transverse section of the Thorax of a young Male Adult along 



the plane A- A, Fig. 15. 

 The oesophagus was distended but empty. 



mediastinal surface of the lung which is in relation with the 

 lateral wall of the posterior mediastinum. On the right 

 lung this portion of the surface presents a longitudinal 

 depression which corresponds with the right border of the 

 oesophagus, and more posteriorly, at the upper part, there 



