VEINS, LYMPHATICS, ARTERIES, AND NERVES 75 



Fig. 23. — Left subclavian artery and principal branches. I-V, relations of 

 digits to interosseous arteries; AA, arch of aorta; AT, anterior thoracic; AC, 

 anterior cervical; AX, axillary; B, brachial; BB, branch to belly of biceps; 

 BBB, branch to distal ends of biceps and brachiaiis; BBS, branch to proximal 

 end of biceps and region of shoulder joint; BE, branch to elbow joint; BM, 

 branches to medial and lateral heads of triceps; BR, branch to brachiaiis; CA, 

 cervical axis; I, first rib; ICU, inferior collateral ulnar; IM, internal mammary; 

 IP, inferior profunda; LT, long (lateral) thoracic; P, profunda; PHC, posterior 

 humeral circumflex (7); PP, princeps pollicis; R, radial; RR, radial recurrent; 

 S, subscapularis; SUC, superior ulnar collateral; TA, thoracic aorta; TD, thoraci- 

 codorsaHs (thoracoacromial); UL, ulnar; UN, ulnar nutrient; UR, ulnar recur- 

 rent; VA, vertebral; VI, volar interosseous. 



