THE THORAX 



1029 



3. The right superior intercostal vein. 



4. The right bronchial vein. 



5. Some oesophageal veins. • 



6. Some pericardial veins. 



7. The lower and upper transverse azygos veins 



Right Lymphatic Duct 



Right Innominate Vein— ^!3^ZA 



Superior Vena Ca 

 Right Superior Intercostal Vein_^ 



Right Azj-gos \ c 



Thoracic Dutt ^ 



Posterior Intercostal Glands- — _ — 



Reoeptaculum Cbyli 



■; V t / / 

 Right Ascendug Lumbar Vein. .--j^^,^^}. 



Inferior Vena Cava 



Thoracic Duct 



Left Innominate Vein 



^ Left Superior Intercostal Vein 

 5. . Arch of Aorta 



.Upper Left Azygos Vein 



SSs^_<.^3L_Upper Transverse Azygos Vein 



■ Lower Transverse Az>'gos Vein 



._ Ninth Intercostal Vein 



_ Lower Left Azygos Vein 



Si^-Left Subcostal V«n 



# 



■ Quadrafais Lumborum 



i — A-^'l^^ Left Ascending Ltimbar Vein 



■ \^ - 



^ --Abdominal Aorta 



. Iliac Crest 



*"'■!— Psoas Magnus 



'i^...Iliacus 

 -.-w Common Iliac Arteries 



Fig. 423. — The Thoracic Dcct, Azygos Veins, and Posterior 

 Intercostal Glands. 



The vena azygos minor or lower left azygos vein commences in 

 the abdomen as the left ascending lumbar vein, and enters the 

 thorax by piercing the left cms of the diaphragm. It ascends 

 upon the vertebral column to the level of the eighth thoracic ver- 



