ABDOMINAL AORTA. 



419 



Relations. It is covered, in front, by the lesser omentum and stomach, behind 

 which are the branches of the cceliac axis and the solar plexus ; below these, by 

 the splenic vein, the pancreas, the left renal vein, the transverse portion of the 

 duodenum, the mesentery, and aortic plexus. Behind, it is separated from the 

 lumbar vertebrae by the left lumbar veins, the receptaculurn chyli, and thoracic 



Fig. 222. The Abdominal Aorta and its Branches. 



duct. On the right side, with the inferior vena oava (the right crus of the 

 Diaphragm being interposed above), the vena azygos, thoracic duct, and right 

 semilunar ganglion. On the left side, with the sympathetic nerve, and left semi- 

 lunar ganglion. 



