546 



THE ARTERIES 



costal, or else as a common trunk witli the left upper 1)ronehial from the front of 

 the thoracic aorta just l)elow the level of the bifurcation of the trachea. It passes 

 outwards on the back of the right bronchus, and is distributed to the bronchi and 

 lung substance. (6) The left upper bronchial arises from the front of the 

 thoracic aorta just below the bifurcation of the trachea, or as a common trunk with 



Fig. 360. — The Arch of the Aokta. the Thoracic Aorta, and the Abdominal Aorta, 

 WITH THE Superior and Inferior Vena Cava and the Innominate and Azygos 

 Veins. 



Right coiiimon carotid 



artery 

 Might internal jugular 



RIGHT LYMPHATIC DUCT 



Innoniinole artery 



RIGHT PXEUMO- 



GASTRIC XERVE 



Right innominate vein 



Internal mammary vein 



Ti'tivk of the pericardiac 

 and thymic veins 

 Vena cava superior 



Vena azygos major 



Vena azygos minor, cross- 

 ing spine to enter vena 

 azygos major 



Hepatic veins .__^ 



Vena cava inferior 



Right phrenic artery 



Cceliac axis 



Right middle suprarenal 

 artery 



Right spermatic artery 

 Right spermatic vein 



Lejt common carotid 



artery 

 LEFT PXEUMOGAS- 

 TRIC NERVE 



THORACIC DUCT 



Ly't innominate vein 



Left subclavian artery 



Left superior intercostal 

 vein 



RECURREXT 

 LARYNGEAL 

 NER VE 



Vena azygos tertius 



OESOPHAGUS 



Left upper azygos vein 



(Esophageal branches 

 from aorta 



Vena azygos minor 



THORACIC DUCT 



Left phrenic artery 



Left middle suprarenal 



artery 

 REGEPTACULUM CHYLI 



Superior mesenteric 

 artery 



Left ascending luynbar 



vein 

 Left spermatic vessels 



Inferior mesenteric 

 artery 



the right bronchial, (c) The left lower bronchial arises from the front of the 

 thoracic aorta just below the level of the left l^ronchus. Like the corresponding 

 artery on the right side, the left broncliial arteries run outwards on the left 

 bronchus, and, after dividing and subdividing on the back of the bronclii, supply 

 the bronchi themselves and the lung substance. Small twigs are given off from the 

 bronchial arteries to the bronchial glands and to the oesophagus. 



