SHOULDER SCAPULAR REGION 



53 



forceps and make an incision into it. 1 The finger may then 

 be introduced into its interior to explore its extent and con- 



Spine of scapula 



A. trans, scapulae (O. T. suprascapulai) , 

 M. supraspinatus 



M. infraspinatu* --,', <. 



A. circumflex scap. , 



(O.T. dorsalis 



scap. 

 M. teres minor 



M. subscapularisy 



M. teres major 



Triang. space - 

 Quadrangular space 



M. triceps cap. long. 

 N. radialis (O.T. musculo-spiratt ' 



A M brachiali 



N. suprascapularis 



M. deltoideus 



M. triceps cap. lat. 

 N. to m. triceps, cap. med. 



Bursa subacromalis 



M. triceps, cap. med. -f 



N. ulnaris 

 Epicond. med. 



N. flex. carp. uln. 

 Olecranon 



FIG. 22. Back of the Arm. 



inlraspinatus 

 Capsular artic. Articulat. 

 humeri ; 

 N. to m. teres minor 



M. deltoideus 



N. axillaris (O.T. 

 circumflex) ram. sup. 

 N. axillaris, 

 " am. inf. 



N. cutan. brach. 

 lat. 



.-- M. triceps, cap. lat. 



N. radialis (O.T. 

 musculo-spiral) 



A. prof, brachii ram. ant. 



A. prof, brachii ram. post. 

 N. cut. antib. dorsalis 

 M. brachialis 



Epicond. lat. 



A. inteross. recurr. 



M. anconaeus 

 Mm. ext. dig. 

 comm. etdig. quint. 

 M. ext. carp uJnaiis 



nections. In some cases it is divided by internal partitions 

 into two or more chambers or loculi. 



1 If the wall of the bursa be quite entire a blowpipe may be thrust into 

 it. It can then be distended, and if unilocular it may be inflated to about 

 the size of a hen's egg. It varies, however, much in size in different 

 individuals. 



