THE BACK. 



399 



same to the trapezius. Also trace the nerve upward to where it comes through 

 the sterno-cleido-mastoid muscle. 



Latissimus Dorsi. Trace the origin to the six lower thoracic spines, lum- 



Semi-apinalis 



Multifldus spinae 



LongissimuB 

 dorai 



Ilio-oostalia 



Rhomboideua 

 major 



Latiaaimua 

 dorsi 



Gluteus 

 maximus 



FIG. 279. DISTRIBUTION OF THE POSTERIOR PRIMARY DIVISIONS OK THE SHXAI. 



NERVES. (Henle.) 



bar aponeurosis, and iliac crest, posterior one-third ot outer lip. Develop the 

 upper border and expose the infraspinatus and teres major in the triangle formed by 

 this muscle, the deltoid, and the trapezius. (Fig. 280.) Develop with the scissors 

 the lower border of the muscle. The latissimus dorsi will be inserted into the poste- 



