SCAPULA. 



teres minor muscle ; and beneath this, extending over the inferior angle, is 

 a raised oval surface, from which the teres major arises. These spaces are 

 separated from that of the infraspinatus muscle by a rough line, which 

 gives attachment to an aponeurotic septum. 



The spine of the scapula is a massive plate of bone projecting backwards 

 from the dorsurn, and curving slightly upwards. It extends outwards and 



Fig. 66. Fig. 67. 



2 



6 



Fig. 66. RIGHT SCAPULA FROM BEHIND. | 



1, glenoid head ; 2, superior angle ; 3, inferior angle ; 4, spine ; 4, at the base, points 

 by a line to the triangular smooth surface of the spine ; 5, acromion ; 6, coracoid process ; 



7, supraspinous fossa; 7', infraspinous fossa; 1 to 2, superior border; 2 to 3, posterior 

 border or base ; 1 to 3, external or inferior border ; 10, is opposite the oval surface of 

 origin of the teres major muscle ; 11, the oblique groove where the teres minor muscle 

 rises; 12, the rough ridge where the long head of the triceps rises; 13, supra-scapular 

 notch ; 14, is below the great scapular notch. 



Fig. 67. RIGHT SCAPULA FROM BEFORE. ^ 

 1, 5, 6, & 13, as in fig. 66; 5', articular facet on the acromion for the clavicle; 



8. subscapular fossa ; 9, long, narrow surface, and 9', triangular rough surface, separated 

 from the subscapular fossa and giving attachment to the upper and lower parts of the 

 serratus magnus muscle. 



a little upwards from the internal border near its upper fourth, towards the 

 middle of the neck, and becoming gradually elevated towards its external 

 extremity, it turns forwards and is continued into the acromion process. 

 The upper and lower surfaces are smooth, of a triangular form, concave, 

 and form part respectively of the supra-spinous and infra-spinous fossae. 

 It presents two unattached borders, the most prominent of which arises 

 from the internal border of the bone by a smooth, flat, triangular surface, 

 on which the tendon of the inferior part of the trapezius muscle glides, 

 as it passes to be inserted into a rough thickening beyond, which projects 

 slightly downwards. In the rest of its extent this border is rough, broad, 

 and subcutaneous, giving attachment by its superior margin to the trapezius, 

 and by its inferior to the deltoid muscle. The other, the external border, 

 short, smooth, and concave, arises near the neck of the scapula, and is con- 

 tinuous with the under surface of the acromion, surrounding thus the great 

 scapular notch between the spine and the neck of the bone. 



