SC4PULAR REGION. 



301 



The tendon of this muscle is occasionally separated from the spine of the scapula 

 by a synovial bursa, which communicates with the synovial membrane of the 

 shoulder-joint. 



Relations. By its posterior surface, with the Deltoid, the Trapezius, Latissimus 

 dorsi, and the integument. By its anterior surface, with the scapula, from which 

 it is separated by the superior and dorsalis scapulae vessels, and with the capsular 

 ligament of the shoulder-joint. Its lower border is in contact with the Teres minor, 

 and occasionally united with it, and with the Teres major. 



The Teres Minor is a narrow elongated muscle, which lies along the inferior 

 border of the scapula. It arises from the dorsal surface of the axillary border of 

 the scapula for the upper two-thirds of its extent, and from two aponeurotic 

 lamina?, one of which separates this muscle from the Infra-spinatus, the other from 



Fig. 171. Muscles on the Dorsum of the Scapula and the Triceps. 



the Teres major; its fibres pass obliquely upwards and outwards, and terminate 

 in a tendon, which is inserted into the lowest of the three facets on the great 

 tuberosity of the humerus, and, by fleshy fibres, into the humerus immediately 

 below it. The tendon of this muscle passes across the capsular ligament of the 

 shoulder-joint. 



Relations. By its posterior surface, with the Deltoid, Latissimus dorsi, and in- 

 tegument. By its anterior surface, with the scapula, the dorsal branch of the 

 subscapular artery, the long head of the Triceps, and the shoulder-joint. By its 

 upper border with the Infra-spinatus. By its lower border, with the Teres major, 

 from which it is separated anteriorly by the long head of the Triceps. 



The Teres Major is a broad and somewhat flattened muscle, which arises from 

 the dorsal aspect of the inferior angle of the scapula, and from the fibrous septa 



