48 DISSECTION OF THE CAT 



ulnar artery, the palmar arch. The ulnar artery 

 is smaller and less superficial than the radial. 



2. The Left Subclavian Artery, unlike the right 

 subclavian, which arises as a branch of the brachio- 

 cephalic artery, takes its origin directly from the 

 arch of the aorta. Its branches are similar to 

 those of the right subclavian artery. 



3. The Intercostal Arteries arise in ten pairs from 

 the thoracic portion of the aorta and supply all 

 but the first three intercostal spaces. 



4. The Bronchial Arteries arise from the aorta near 

 the fourth intercostal artery and supply the lungs. 



5. The Phrenic Artery is a small branch given off 

 from the aorta as it pierces the diaphragm, which 

 organ it supplies. 



6. The Coeliac Axis is a large branch given off 

 from the aorta after it pierces the diaphragm. It 

 divides into three branches : 



a. The Hepatic Artery, which sends branches to 

 the liver, duodenum, and pancreas. 



b. The Coronary Artery, which is distributed along 

 the small curvature of the stomach. 



c. The Splenic Artery, which supplies the spleen 

 and portions of the stomach. 



7. The Superior Mesenteric Artery arises next pos- 

 terior to the coeliac axis. It subdivides in the 

 mesentery and conveys blood to the intestine. 



8. The Suprarenal Arteries are two small branches 

 which arise near the superior mesenteric artery 

 and supply the adrenal bodies. 



