BRACHTAL ARTERY. 



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The BRACIIIAL ARTERY (fig. 77, 4 ) is a continuation of the axillary 

 trunk, and supplies vessels to the upper limb. It begins at the lower 

 border of the teres major muscle, and terminates rather below the bend of 

 the elbow, or "opposite the neck of the radius" (Quain), in two branches 

 radial and ulnar, for the forearm. 



In the upper part of its course, the vessel is internal to the humerus, 

 but afterwards in front of that bone; and its situation is indicated by the 

 surface depression along the inner border of the biceps and coraco-brachi- 

 alis muscles. 



Fig. 77. 



1. Axillary artery and branches: the small 



branch above the figure is the highest 

 thoracic, and the larger branch close 

 below, the acromial thoracic. 



2. Long thoracic branch. 



3. Subscapular branch. 



4. Brachial artery and branches. 



5. Superior profunda branch. 



6. Inferior profianda branch. 



7. Anastomotic branch. 



8. Biceps muscle. 



9. Triceps muscle. 



The median aud ulnar nerves are shown iu 

 the arrn ; the median is close to the bra- 

 chial artery. 



AXILLARY AND BRACHIAL ARTERIES AND THEIR BRANCHES. (Quaitrs "Arteries.") 



In all its extent the brachial artery is superficial, being covered by the 

 integuments and the deep fascia ; but at the bend of the elbow it becomes 

 deeper, and is crossed by the prolongation from the tendon of the biceps. 

 Posteriorly the artery has the following muscular connections (fig. 78) : 



