AZYGOS 



mi 



superior intercostal vein; (8) the nine lower right intercostal veins; and (9; the 

 right subcostal vein. 



The vena azygos minor — also called the lower left azygos and vena hemi- 

 azygos — begins in the abdomen by communicating, like the vena azygos major, 

 with the ascending lumbar vein of the left side. Through this vein it communi- 



FiG. ;?82. — The Superior and Ixferior Ven^ Cavje, the Innominate Veins, 

 AND THE Azygos Veins. 



Right common carotid 



artery 



Right internal jugular 



vein 



RIGHT LYMPHATIC DUCT 



Innominiite artery 



RIGHT PNEUMO- 



GASTRIC NER\E 



Right inncminate vtin 



Inlernal mammary vein 



Trutik of the pericardiac 

 a7id 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 



Cieliac axis 



Right middle suprarenal 

 artery 



Right spermatic artery . 

 Right spermatic vein 



Left common carotid 



artery 

 LEFT PNEUMOGAS- 

 TRIC NER VE 



THORACX DUCT 



Left innominate vein 



Left subclavian artery 



Left superior intercostal 

 vein 



RECCRREXT 

 LARYNGEAL 

 NER VE 



Vena azygos tertivs 

 (ESOPHAGUS 



_ Left upper azygos vein 



(Esophageal branches 

 from aorta 



Vena azygos minor 



THORACIC DUCT 



Left phrenic artery 



Left middle suprarenal 

 arfery 



RECEPTACULUM CHYLI 



Superior mesenteric 

 artery 



Left ascending lumbar 



vein 

 Left spermatic vessels 



Inferior mesenteric 

 artery 



cates with the lumbar veins, the renal, and the iliac veins, and, according as one or 

 other portion of the ascending lumbar is enlarged and other portions are diminished 

 in size or obliterated, so may the vena azygf)S minor appear to begin in the vena 

 cava inferior or in a lumbar, the renal, or f)ne of the iliac veins. The vena azygos 

 minor, after receiving the left subcostal vein, passes through the left crus of the 

 diaphragm, and courses up the posterior mediastinum to the left of the bodies of 



