THE UPPER LIMB 



299 



corresponding arteries, the anterior being the perforating branches 

 of the internal mammary, and the latered being branches of the 

 intercostal arteries. 



Fascia. — ^The superficial fascia is continuous ov^er the clavicle \%-ith 

 the superficial fascia of the neck, and it is noteworthy in two respects. 



- .- -; Intercosto-bumeTal 



-Additional Intercosto- 

 bninetal 



Lateral Cutaneoos 

 12th Thoracic 



Iliac Branch of Ilio 

 hypogastric 



Hypc^astric Branch. „ 

 w Ilio-hypogastric 



i Fig. 172. — Cutaneous Nerves of the Trunk (Antero-lateral 



View) (after Henle). 



I-I2. Anterior Cutaneous ; 2-12, Lateral Cutaneous. 



(In the first place, just below the clavicle it has a faint reddish 



coloxir, due to the fact that over the cla\-icular portions of the 

 pectoralis major and deltoid it gives origin to fibres of the platysma 

 myoides, which can be seen on incising it. In the second place, in 

 the region of the mammary gland it divides into t\vo laminae, which 

 jensheathe that gland. These laminae send processes into the sub- 



