66 



THE SUPERIOR EXTREMITY 



lacertus fibrosus? and it is crossed either deeply or super- 

 ficially by the volar branch of the medial cutaneous nerve of 

 the forearm (Fig. 31). 



The Lymph Vessels and Lymph Glands of the Superior Extremity. 

 With the exception of a few lymph vessels which the dissector may have 



Jugular lymph trunk, 



Subclavian lymph 

 Infraclavicular lymph glands 



Delto- pectoral lymph glands,. 1^ 



Lymph vessels which accompany I 

 the cephalic vein" 



"Internal jugular vein 



Subclavian'vein 

 i Innominate vein 



Broncho-mediastinal 



lymph trunk 



Axillary lymph glands 



Lymph vessels which accompany 



the basilic vein 



"""Cubital lymph glands 



FIG. 30. Diagram of the Superficial Lymph Vessels and Lymph Glands of 

 the Right Superior Extremity. 



found passing to and from the axillary lymph glands (p. 29), the lymph 

 vessels of the superior extremity cannot be displayed in an ordinary 

 dissecting-room "part," and it is only occasionally in the hospital, the 

 post-mortem room, and in specially prepared subjects that an opportunity 

 for seeing the lymph vessels will occur. It is unfortunate that this should 



1 The strengthening fibres of the lacertus fibrosus are derived from the 

 tendon of insertion of the biceps brachii. 



