MUSCLES OF THE NECK. 



189 



Insertion Arches downward, outward, and backward; 

 inserted into sides of pharynx and thyroid cartilage. 



Nerve Meckel's ganglion. 



FIG. 86. CONSTRICTOR MUSCLES OF PHARYNX. 



1, orbicularis oris : 2, buccinator; 3, superior constrictor; 4, middle constrictor; 

 5, inferior constrictor ; 6, mylo-hyoid ; 7, hyoglossus. 



SUPERIOR CONSTRICTOR. 



Origin Internal pterygoid plate, hamular process, 

 tendon of tensor palati, posterior edge of pterygo- 

 maxillary ligament and mylo-hyoid ridge. 



