134 



MUSCLE TISSUE 



constrictor muscles contract upon the mass and force 

 it into the esophagus. 



Fia. 64 



Muscles of the pharynx. External view. (Gray.) 



The Muscles and Fascia of the Neck 



The neck muscles are divided into a superficial and 

 a deep set. They are arranged vertically and only the 

 anterior or superficial set will be described, as the others 

 are not important so far as the nurse's knowledge is 

 concerned. 



