THE ABDOMEN 



763 



the kit ascending lumbar vein, through which it has communications 

 sunHar to those of the right azygos vein. It may, however, spring 

 from the left renal vein, or the first left lumbar vein. It enters 



Right Lj-mphatic Duct 



Right Innominate Vei: . - S\ 



Superior Vena Ca\ 



Right Superior Intercostal Vei 



Right Azygos Vein 



Thoracic Duct 



Posterior Intercostal Glan<1s ._ 



Receptaculum Chyli_ 

 Right Ascending Lumbar Ve 



Inferior 



lor Vena Cav3.__:.j.^ ■ • _ 



Thoracic Duct 



Left Innominate Vein 



.-._ Left Superior Intercostal Vein 

 L Arch of Aorta 



_ Upper Left Azygos Vein 



L'pper Transverse Azygos Vein 



Lower Transverse Arj'gos Veir 

 Ninth Intercostal Vein 

 : Lower Left Azygos Vein 



1.4^— Left Subcostal Vein 



■Quadratus Lumbonui 



-Left Ascending Lumbar Vein 



-;... Abdominal Aorta 



■ 7 vn- 



^'V^^g^— Iliac Crest 



—V L— Psoas Magnus 



"A 



Common Iliac Arteries 



Fig. 327. — The Thoracic Duct, Azygos Veins, and Posjerior 

 Intercostal Glands. 



the thorax through the left crus'of the diaphragm, and subsequently 

 terminates in the right azygos vein. 



The right and lower left azygos veins are persistent portions of 

 the right and left cardinal veins of foetal life. 



The right and lower left azygos veins, through their connections 

 with the ascending lumbar veins, establish communications with 



