PRACTICAL ANATOMY. 



tributed to the shoulder, clavicular, and sternal regions. 

 A number of lymphatic glands are found within and 

 beneath the superficial fascia. When the deep cervical 

 fascia is opened, the sterno-mastoid muscle is brought 

 prominently into view ; it arises from the mastoid por- 

 tion of the temporal and the adjoining occipital bone, 

 passes obliquely downward and forward, and is inserted 



FIG. 191. LYMPHATICS OF HEAD AND NECK. 



1, internal jugular vein ; 2, deep cervical glands. 



by a tendon into the sternum, and, by a broad, muscular 

 insertion, upon the clavicle. This muscle divides the 

 side of the neck into two great triangles, the anterior 

 and posterior. The anterior great triangle is bounded 

 above by the lower border of the inferior maxillary and 

 a line drawn from its angle to the mastoid process ; in 

 front, by the median line ; behind, by the anterior border 



