174 



SPECIAL ANA TOMY OF THE SKELETON 



presents a broader, somewhat triangular surface, which gives origin to the Teres 

 major, and over which the Latissimus dorsi glides; sometimes the latter muscle 

 takes origin by a few fibres from this part. The broad and narrow portions of 

 bone above alluded to are separated by an oblique line which runs from the axillary 

 border, downward and backward, to meet the elevated ridge; to it is attached the 

 aponeurosis separating the two Teres muscles from each other. 



Coracohu meral 

 ligament 



Coracoacromial ligament 

 Trapezoid ligament 

 Conoid ligament 



Groove for Dorsalis 

 Scapulae Artery. 



FIG. 139. Left scapula. Posterior surface or dorsum. 



The spine (spina scapulae) is a prominent plate of bone which crosses obliquely 

 the inner four-fifths of the dorsum of the scapula at its upper part, and separates 

 the supra- from the infraspinous fossa; it commences at the vertebral border by a 

 smooth, triangular surface, over which the Trapezius glides, and, gradually be- 

 coming more elevated as it passes outward, terminates in the acromion process 

 which overhangs the shoulder-joint. The spine is triangular and flattened from 



