SfAPCLAR MUSCLES. 



29 



Between the larger rhomboid muscle and the serratus magnus, at 

 the base, or vertebral border, of the scapula, run the posterior 

 scapular artery and vein, the ramifications of which are to be 

 traced. 



To the borders and the angles of the scapula the following Muscles 

 muscles are connected : attached 



From the upper margin of the scapula arises one muscle, the to upper 

 omohyoid (fig. 11, E). About half an inch wide at its origin, the 

 muscle is attached to the edge of the bone behind the notch, and 

 sometimes to the ligament which bridges over the notch. 



Along the axillary margin arise the long head of the triceps to axillary 

 (fig. 22, A, p. 51). and the teres minor (H) and major (G) muscles ; margin ' 



Trapezius. 



Deltoi 



Supraspinatns. 



Biceps (short head) 

 and coraco-brachialis. 



Pecloralis minor. 

 Glenoid ligament. 

 Triceps (long head). 



FIQ. 10. THE SCAPULA FROM THE FRONT. 



but these attachments will be ascertained in the progress of the 

 dissection. 



The vertebral border of the bone has four muscles inserted into it. and to base 

 Between the superior angle and the spine is the levator anguli 

 scapulae (figs. 12 and 13, H) ; opposite the spine the rhomboideus 

 minor (j) is attached ; and between the spine and the inferior angle 

 the rhomboideus major (K) is inserted : the upper fibres of the last 

 muscle often end in an aponeurotic arch, which is fixed to the bone 

 above and below. In front of these muscles, and inserted into the 

 base of the scapula along its whole length, is the serratus magnus 

 muscle (figs. 10 and 11, D), the upper and lower parts of which 

 are much thickened, and occupy special surfaces on the ventral 

 aspect of the corresponding angles of the bone. 



The insertion of the small pectoral muscle into the anterior half to coracoid 



pro* 



