THE NECK 165 



Low Tracheotomy is usually performed to relieve dyspnoea 



Digastric, 

 anterior belly 



Thyreo-hyoid 



membrane 



Thyreoid _ 

 cartilage 

 Thyreo-hyoid 



Stcrno-hyoid 



Cr 



cart 



Anterior 

 jugular vein 



Fascia enclosing 

 suprasternal space 



Pretracheal fascia, 

 cut to show forma- 

 tion of sheath of 

 thyreoid gland 



'* Sterno-mastoid 



Connection between anterior jugular veins 



FIG. 51. The Anterior Median Line of the Neck. On the left side the 

 platysma has been removed, and the sterno-hyoid and sterno-thyreoid 

 have been partially resected. 



produced by malignant disease of the thyreoid gland. In this 



11 a 



