202 



THE CIRCULATORY APPARATUS 



The Thoracic Aorta.-The thoracic aorta descends 

 from the lower border of the fifth to the front of the 

 last dorsal vertebra. 



FIG. 82 



Cystic artery. 



The celiac axis and its branches, the liver having been raised and the 

 lesser omentum removed. 



The Abdominal Aorta. The abdominal aorta runs 

 from the last dorsal to the left side of the middle of 

 the fourth lumbar vertebra, there dividing into the 

 two common iliacs. 



The branches of the thoracic aorta: 



Nine pairs of intercostal arteries, two subcostal, 

 bronchial, esophageal, mediastinal, and pericardial. 



