414 



AETERIES OF THE UITER IJMB. 



Fiff. 270. 



%^^^ 



Fig. 270. — Dkep Anterior View ol' the Ar- 

 teries OF THE Arm, Forearm, and Hand 

 (from Tiedemaim). 5 



The biceps bracliii, tlie pronator teres and mus- 

 cles rising from the inner condyle, the supinator 

 longus, the lower part of the flexor longus pol- 

 licis and flexor profundus digitorum, the anterior 

 annular ligament of tlie carpus and the muscles 

 of the ball of the thumb, have been removed ; n, 

 pronator quadratus muscle ; 1, lower part of 

 the axillary artery continued into the brachial ; 

 2, superior profunda branch ; 3, infei'ior pro- 

 funda ; 4, anastomotic ; 5, upper part of the 

 radial artery and radial recurrent ; 5', lower part 

 of the radial artery, giving off the superficialis 

 volffi branch ; 5", the radial artery emerging from 

 between the heads of the abductor indicis mus- 

 cle ; 6, 6, the upper part of the ulnar artery with 

 the anterior and posterior ulnar recurrcat 

 branches ; 6', the ulnar artery axsproaching the 

 wrist and descending into xhe superficial palmar 

 arch whicli lias been cut short ; 6", the deep 

 branch of the ulnar artery uniting with the deei) 

 palmar arch ; 7 (marked only on one), three 

 interosseous liranches from the deep palmar arch 

 joining the jmlmar digital arteries 8, 8, 8, which 

 have been cut away from their origin from the 

 superficial aich to near their division into the 

 collateral digital arteries; the ulnar collateral 

 of the little finger is represented as rising in 

 this instance from the deep ulnar artery ; 9, 

 placed between the princeps pollicis and radialis 

 indicis branches of the radial artery ; 10, lower 

 liart of the anterior interosseous artery i^assing 

 behind the pronator quadratus muscle ; 11, anas- 

 tomosis of the anterior carpal branches of the 

 radial and ulnar arteries with recurrent branches 

 from the deep palmar arch. 





extensors of the metacarpal bone and 

 lirst plialanx of the thumb, and upon 

 the external lateral ligament of the 

 wrist-joint, to reach the back of the 

 carpus. It then runs downwards for 

 a short distance, is crossed by the 

 tendon of the extensor of the second 

 ])halanx of the thumb, and reaching 

 the upper end of the space between the 

 first and second metacarpal bones, 

 turns forwards into the palm of the 

 hand, b}^ passing between the heads of 

 the first dorsal interosseous muscle. 



As it turns round below the end of 

 tlie radius the artery is deep-seated, 

 but afterwards comes nearer to the 

 surface. It is accompanied by two 

 veins and by some filaments of the 

 external cutaneous nerve, and is crossed 

 by subcutaneous veins and by filaments 

 of the radial nerve. 



