SUPERFICIAL STRUCTURES OF ARM. 



39 



SECTION III. 



THE FRONT OF THE ARM. 



Position . For the dissection of the superficial vessels and nerves Position, 

 on the front of the arm the limb should lie flat on the table, with 

 the anterior surface uppermost. 



Dissection. The skin is to be raised from the fore and lateral and inci- 

 sions in the 

 skin. 



Circumflex, 



Upper external cutaneous 

 branch of musculo-spiral. 



Musculo-cutaneous. 



Supraclavicular. 



Small internal cutaneous. 

 In tercosto-humeral . 



'Branches of internal cutaneous. 



Ulnar. 



Median. 



FIG. 15. DIAGRAM OP CUTANEOUS NERVES OF FRONT OF ARM. 



surfaces of the arm and elbow. One incision should be made 

 along the centre of the limb as far as two inches below the 

 bend of the elbow, and at the termination of this a second 

 cut half round the forearm. Strip the skin from the limb as 

 low as the transverse incision, leaving the fat and the cutaneous 

 Is and nerves behind. For special dissections of the parts 

 in front of the bend of the elbow the incisions (13, 14, 15) 



