PLATE IV. 



MUSCLES 



A Placed on the deep fascia of the arm 



over the biceps muscle. 

 B Placed on the semilunar or bicipital 



C Deep fascia of the forearm. 



X Position of the lowest superficial 



lymphatic gland in upper limb. 



fascia. 



VESSELS 



a Median vein. 



b Median cephalic. 



c Radial vein. 



d Cephalic vein. 



e Median basilic. 



/ Ulnar veins, common trunk. 



g Posterior ulnar veins. 



h Anterior ulnar vein. 



k Communication of median with deep 



veins. 

 I Basilic vein. 



NERVES 



1 Internal cutaneous, anterior division. 



2 Internal cutaneous, posterior division. 

 8 External cutaneous. 



4 Posterior branch of external cutaneous. 



5 Upper external cutaneous branch of 



musculo-spiral. 



6 A twig from the internal cutaneous, 



supplying the skin in front of biceps. 



7 Nerve of Wrisberg. 



It may be taken as a general rule that the external cutaneous nerve passes beneath 

 the median cephalic vein, and that one or two branches of the internal cutaneous nerve 

 usually pass over the median basilic, while the others pass beneath it. 



It is important to remember that the median basilic vein is only separated by the 

 bicipital fascia from the brachial artery which lies beneath it ; and thus, in the olden days 

 when bleeding was the fashion, the artery was frequently injured, and arterio-venous 

 aneurisms were not uncommon. 



Supra-condyloid lympliatic gland. This, the lowest lymphatic gland (or glands) in 

 the arm, is placed about an inch above the internal condyle, along the course of the basilic 

 vein ; it receives all the lymphatics from the ulnar side of the forearm and fingers, and 

 most of those from the radial ; some lymphatics from the latter, however, running up 

 along the cephalic vein to reach the glands in the axillary space. 



