1 10 ANATOMY AND PHYSIOLOGY FOR NURSES 



supplies, viz., the forearm, the wrist, and the hand. Its 

 divisions are: 



The ulnar artery is larger than the radial, and runs 

 obliquely inward to the middle of the forearm ; then across 

 the annular ligament to the radial side and to the palm, 

 where it unites with the superficialis volae or radialis 

 indicis to form the superficial palmar arch. The branches 

 of the ulnar artery are as follows: 



Forearm. Wrist. Hand. 



Anterior ulnar recurrent. Anterior carpal. Communicating. 



Posterior ulnar recurrent. Posterior carpal. Digital. 

 Interosseous (anterior and Superficial palmar arch. 



posterior). Deep palmar arch. 



Muscular. 



Having considered the arterial structure of the upper 

 portion of the body, we will now describe the blood-supply 

 of the trunk and lower extremities, beginning with the 

 thoracic aorta. 



THE THORACIC AORTA 



The thoracic aorta commences at the left side of the 

 lower border of the fourth dorsal vertebra; it terminates 

 at the aortic opening in the diaphragm, in front of the last 

 dorsal vertebra. 



Its branches are as follows : 



Pericardiac. Ksophageal. 



Bronchial. Posterior mediastinal. 



Intercostal. 



