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A MANUAL OF ANATOMY 



process. Deep. — ^The external lateral ligament of the wrist- joint, 

 and the scaphoid and semilunar bones. It is accompanied by two 

 venae comites. 



Branches. — The branches are the posterior radial carpal, first 

 dorsal interosseous, two arteriae dorsales pollicis, and arteria 

 dorsalis indicis. 



The posterior radial carpal artery, of small size, arises from the 

 radial as it lies upon the external lateral ligament. It passes in- 



Extensor Carpi Radialis Brevior 



, Extensor Carpi Radialis Longior 



Post. Branch of Ant. Inteross. Artery 

 __. Posterior Radial Carpal Artery 

 --• ist Dorsal Interosseous Artery 

 Radial Artery at Wrist 



Ext Carpi Ulnans — 



Posterior Ulnar 

 Carpal Artery 



2nd and 3rd Dors. 

 Inteross. Arteries 



Superior 

 Perforating Artery 



»_ Extensor Brevis Pollicis 



__- Arteria Dorsalis Pollicis 



— __ Extensor Longus 

 Pollicis 



Fig, 209, — The Arteries of the Back of the Wrist and Hand 

 (after L. Testut's ' Anatomie Humaine '). 



wards on the back of the wrist beneath the extensor tendons, and 

 anastomoses with the posterior ulnar carpal and posterior branch 

 of the anterior interosseous to form the posterior carpal arch. 



The first dorsal interosseous artery arises from the preceding, 

 or from the radial a little lower down. It passes to the upper 

 end of the second interosseous space, where it receives a superior 



