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HANDBOOK OF ANATOMY 



The Buccinator muscle is also a muscle of mastication, but has 

 no action on the jaw ; it is the muscle of the cheek, and by its 

 contraction prevents food from collecting on one side. 



MUSCLES OF THE NECK WHICH DEPRESS THE LOWER JAW 



4. The muscles causing Movements of the Head i.e., those 

 connecting the skull to the spinal column. 



(1) Flexion and extension the muscles of both sides acting 

 together. 



