THORACIC CAVITY 



27 



Branches. These may be divided into two groups 

 i) Lateral; (2) Medial 



Scalenus medius 

 .Scalenus anterior 



Jrachial plexus 



Cut edge of costal part 

 of parietai pleura 



Second right aortic 

 intercostal artery 



Vena azygos 

 Sympathetic trunk 

 Hnd of right 

 bronchial vein 

 Branch of pul- 

 monary artery 

 Eparterial branch 

 of bronchus 

 Posterior pul- 

 monary plexus 



Hyparterial part 

 of bronchus 



Lower right pul- 

 monary vein 



Sulcus terminalis 

 of right atrium 



Great splanchnic 



Inferior vena 

 cava 



Small splanchnic 

 nerve 



Right phrenic nerve 



Right common carotid artery 



Right subclavian artery 



Right subclavian vein 

 - First rib 



(Esophagus 



Trachea 



Right vagus nerve 

 Right phrenic nerve 



Cut edge of costal parl 

 of parietal pleura 



" Superior vena cava 



Internal mam- 

 mary artery 

 Cut edge of peri- 

 cardial part of 

 parietal pleura 

 Cut edge of peri- 

 cardium 



Right atrium 



Diaphragm 



FIG. 12. Dissection of Thorax from right side showing the constituent parts 

 of the middle, superior, and posterior mediastina. 



(i) Lateral Branches. From each ganglion two branches 

 pass laterally into the adjacent intercostal space, where they 



