DISSECTION OF THE UPPER EXTREMITY 



89 



In the superficial fascia find the following : 



Nerves. (Fig. 28.) 



(a) Superficial ramus of radial nerve (ramus superficialis N. radialis) 



(0. T. radial branch of musculospiral). 



(aa) Ulnar anastomotic ramus (ramus anastomoticus ulnaris}. 



(ab) Dorsal digital nerves (Nn. digitales dorsales). 



(b) Dorsal ramus of hand from N. ulnaris (ramus dorsalis manus N. 



ulnaris) (0. T. dorsal branch of ulnar nerve). 

 (ba) Dorsal digital nerves (Nn. digitales dorsales). 

 Study exact distribution. 



FIG. 29. 



M. flex. poll. long. 

 N. medianus 

 M. palm, long j 

 A. V. and N. inteross. volar. 

 A. ulnaris v \ 

 M. flex. dig. sub v \ 



N. ulnaris 



M. flex, carpi radialis 



/ M. pronator teres 

 A. radialis 



M. flex. carpi N 

 ulnaris 



Vv. ulnares^ 



M. flex, dig 

 prof. 



M. brachioradialis 



Vv. radiales et 



" N. musculocut. 



,-N. radialis 



-M. ext. carpi 

 rad. long. 



- -Radius 



/T " ^M. ext. carpi rad. 

 - brevis 



v 

 * M. supinator (superf. bundle) 



Ext. digitorum communis 

 M. supinator (deep bundle) 



M. ext. digiti V. prop. 



Section passing below the upper third of the forearm. Frozen subject ; right forearm ; segment 

 distal to the cut. (P. Fredet. ) (From Poirier et Charpy, Traite d' Anat. hum., Paris, 1901, 2 ed., t. n. p. 

 166, Fig. 129.) 



Ulna 



M. anconaeus ""^W*": 



M. ext. carpi ulnaris 



A. interossea dors. 



Veins. 



(a) Venous network of back of hand (rete venosum dorsale manus). 

 (aa) Dorsal metacarpal veins (Vv. metacarpeae dorsales). 



(aaa) Digital venous arches (arcus venosi digitales). 



(aaaa) Dorsal digital veins proper (Vv. digi- 

 tales dorsales propriae). 

 Note the relation of these veins to the V. basilica and V. cephal- 



