366 A MANUAL OF ANATOMY. 



The Levator Anguli Scapulse. Fig. 76. 



Origin. From the posterior tubercles of the transverse 

 processes of the three or four upper cervical vertebrae. 



Insertion. Into the upper fourth of the vertebral border 

 of the scapula. 



Nerve Supply. The third and fourth cervical nerves. 



Action. To raise the inner portion of the scapula, at the 

 same time depressing the shoulder. 



The Rhomboideus Major and Minor. Fig. 76. 



These muscles will be described together, as they are 

 really one. 



Origin. From the lower portion of the ligamentum 

 nuchae, the spinous processes of the last cervical and the 

 four or five upper dorsal vertebrae, and the supraspinous 

 ligament. 



Insertion. Into the lov/er three-fourths of the vertebral 

 border of the scapula. 



Nerve Supply. Branches from the fifth cervical nerve. 



Action. To draw the scapula to the spine and at the 

 same time elevate the inner border ; this also depresses the 

 outer portion of the bone (and the shoulder). 



The Supraspinatus. Fig. 76. 



Origin. From the inner two-thirds of the supraspinous 

 fossa and the inner surface of the supraspinous fascia. 



Insertion. Into the upper facet upon the greater tuber- 

 osity of the humerus. Its under fibres are also continued 

 into the capsular ligament of the shoulder-joint. 



Nerve Supply. From the fifth cervical nerve through the 

 suprascapular. 



Action. To abduct the humerus, but more especially to 

 hold the head of the humerus against the glenoid cavity 

 of the scapula. 



