216 



Aorta abdominalis. 



562. Course and Ramification of the Abdominal 



A o r t a. 



The abdominal aorta, Aorta abdominalis, gives off a large 

 number of branches. From its anterior aspect three single arteries arise, 

 the others arise from its lateral aspect. The single arteries are : 



1. The coeliac artery or axis, Art. codiaca; it is a short 

 thick trunk, which arises from the aorta opposite the margin of the 

 diaphragm ; it passes above the upper border of the pancreas, a little 

 to the left, and immediately gives off two phrenic arteries. These 

 ramify in the suprarenal capsules, and in the lumbar and costal portions 

 of the diaphragm, and anastomose with each other, as well as with 

 the intercostal arteries (from the thoracic aorta) and the musculo-phrenic 

 (from the internal mammary). 



