DISSECTION OF THE UPPER EXTREMITY 



63 



(c) Subscapular lymph-glands (lymphoglandulae sub scapular es) . 



Count the number of lymph-glands found in each of these 

 three chains. Whence do the glands of each of these three chains 

 draw lymph? Note especially the intimate relations of the 

 glands of the middle chain to the axillary vein. 



FIG. 16. 



Tmncus thyreocervicalis 



Jf. scalenus anterior '; 



transversa scapulae ; ; 



cransversa colli : : - ; 



Ramus subclavius 



A. axillaris 

 f Ramus pectoralis 



A. thoracoacromialis j Ramus acromialis "' 

 I Ramus deltoiden 



A . vertebralis 



: : A. mam TD aria interna 

 : A. subclavia 

 / / A. anonyma 

 : 



N. medianus 



A. circumflexa I 



anterior 



humeri [posterior 



A. thoracalis lateralis 



The subclavian and the axillary artery and their relation to the plexus brachialis. 

 (After Toldt, Anat. Atlas, Wien, 1900, 2 Aufl., p. G10, Fig. 986.) 



Arteries. (Fig. 16.) 



(a) Axillary artery (A. axillaris). 



(aa) Highest thoracic artery (A. thoracalis suprema) (0. T. 

 superior thoracic artery). 



