THE BONES OF THE UPPER LIMB 



179 



teres major arises from about the lower third. The impression 

 for the latter muscle is oval ; it extends on to the back of the inferior 

 angle, and it is separated from the impresssion for the teres minor 

 by a short rough line. This line gives attachment to an inter- 

 muscular septum which separates the teres muscles, and the oblique 

 line to a septum which separates these muscles from the infra- 

 spinatus. The supra- and infraspinous fossae communicate with 

 each other by means of the great scapular notch, which lies outside 



Coracoid Process 

 Clavicular j 

 Acromion Process Facet 1 



Deltoid ' ' 



Pectoralis Minor -- 



Suprascapular Notch 



Superior Angle 



Upper part of 

 Serratus Magnus 



Short Head of Biceps - ' 

 and 

 Coraco-brachialis 



Glenoid Cavity - ■ 



Neck'- 



Infraglenoid Ridge 



and Long Head 



of Triceps 



' Middle part 

 of Serratus 

 Magnus 

 --Subscapular 

 Fossa and 

 Subscapularis 

 — Vertebral 

 Border 

 (Base) 



Axillary Border 



Inferior Angle 



Fig. tot. — The Right Scapula (Anterior View ). 



the short external border of the spine, and transmits the supra- 

 scapular artery and nerve. 



The borders are superior, internal or vertebral, and external or 

 axillary. The superior border, which is the shortest and thinnest, 

 extends from the superior angle to the coracoid process. Close 

 to that process it presents the suprascapular notch. This is 

 converted into a foramen by the suprascapular or transverse 

 ligament, which sometimes undergoes ossification. The supra- 



