146 ELEMENTARY ANATOMY. [LESS. 



acromion* which is flattened in an opposite direction from 

 that in which the scapular spine is flattened. 



The superior and shortest border of the scapula exhibits 

 a deep notch, which is converted into a foramen by means 

 of a ligament. In front of this notch rises a strongly pro- 

 jecting curved process, called from its beak-like shape the 

 coracoid. 2 



FIG. 123. OUTER OR DORSAL VIEW OF THE RIGHT SCAPULA OF MAN. 



a 1 , superior .ingle ; a 2 , inferior angle : ac, acromion ; ax, axillary border ; c, 

 coracoid ; g, margin of glenoid surface ; is, infra-spinous fossa ; , neck and 

 supra-scapular notch, in superior border ; s, spine ; ss t supra-spinous fossa ; v, 

 vertebral margin. 



The hinder border is the longest. It is called the vertebral 

 border, because it is nearest to the backbone. 



The third border (called the axillary border) ascends 

 obliquely from the lower end of the vertebral border to a 

 rounded, concave, shallow, articular surface, called the 

 glenoid 3 cayity (into which the head of the upper-arm bone 

 is received), and which is overhung within and in front by 

 the coracoid process on its internal side, while the acromion 

 overhangs it externally and behind. The part which - sup- 

 ports the glenoid surface is termed the neck, 



The superior and vertebral borders meet in a sharp superior 

 angle, while at the junction of the axillary and vertebral 

 borders is a flattened space for the insertion of a muscle 

 called the teres major. 



The coracoid and acromion arise from distinct centres of 



1 From aKpoc, a summit, and a'>/uo, the shoulder. 



2 From Kopuf, a crow, and efoof, form. 



3 From i\t]vr], a superficial cavity. 



