ANATOMY AND PHYSIOLOGY 



Branches (thoracic, subscapular, circumflex.} To all structures 

 around the axilla. One, the lateral thoracic, gives arteries to the 

 mammary gland. 



The brachial artery (Figs. 129, 131) begins where the axillary 

 ends, at the lower border of the axilla, or armpit, and extends 



FIG. 130. DEEP PALMAR ARCH. 



Made by continuation of the radial artery. This is covered by the muscles of the 

 thenar and hypothenar eminences. 



downward in front of the arm (with the biceps muscle) to the bend 

 of the elbow, where it divides into the radial and the ulnar arteries. 

 Its branches supply the muscles of the humerus and the bone 

 itself. (The median nerve lies next to this artery under the border 

 of the biceps muscle.) 



