THE ULNAR ARTERY 



653 



Posterior idnar 

 recurrent 



Posterior inlerosseous. 



it joins the posterior carpal branch of the ulnar artery. This artery gives off, 

 near its origin, the interosseous recurrent branch. 



The interosseous recurrent artery (a. intetossea recurrent) (Fig. 465) is a large 

 vessel which ascends to the interval between the external condyle and olecranon, 

 on or through the fibres of the Supinator [brevis], but beneath the Anconeus, 

 anastomosing with a branch 

 from the superior proflinda, / I/ . Descending branch from 



and with the posterior ulnar / ^ 



recurrent and anastomotica 



magna. 



The muscular branches 

 (rami musculares) are dis- 

 tributed to the muscles along 

 the ulnar side of the forearm. 



The anterior ulnar carpal 

 (ramus carpeus volaris) (Fig. 



464) is a small vessel which 

 crosses the front of the car : 

 pus beneath the tendons of 

 the Flexor profundus and in- 

 osculates with a correspond- 

 ing branch of the radial artery. 



The posterior ulnar carpal 

 (ramus carpeus dorsalis) (Fig. 



465) arises immediately above 

 the pisiform bone, and winds 

 backward beneath the tendon 

 of the Flexor carpi ulnaris; 

 it passes across the dorsal 

 surface of the carpus be- 

 neath the Extensor tendons 

 to anastomose with a corre- 

 sponding branch of the radial 

 artery and complete the pos- 

 terior carpal arch (rete carpi 

 dorsals] (Fig. 465). Imme- 

 diately after its origin it gives 

 off a small branch, which runs 

 along the ulnar side of the fifth 

 meta carpal bone, and supplies 

 the ulnar side of the dorsal sur- 

 face of the little finger. 



The profunda branch (ram- 

 us volaris profundus} (Fig. 

 464) passes deeply inward be- 

 tween the Abductor minimi 

 digiti and Flexor brevis min- 

 imi digiti, near their origins; 

 it anastomoses with the termi- 

 nation of the radial artery, 

 completing the deep palmar 

 arch. 



The continuation of the trunk of the ulnar artery in the hand forms the greater 

 part of the superficial palmar arch. 



Termination of an. 

 terior interosseous. 



Posterior carpal 

 (radial). 



Radial. 



.Dorsalis pollicis. 

 Dorsalis indicts. 



FIG. 465. Arteries of the back of the forearm and hand. 



