1604 



HUMAN ANATOMY. 



THE MUSCLES OF THE PHARYNX. 



The arrangement of the muscular tissue differs from the ordinary one of the 

 digestive tract, inasmuch as the outer layer is approximately circular and the longi- 

 tudinal fibres are largely internal. The chief elements are the three constrictors, 

 which overlap one another from below upward, the stylo-pharyngeus, the palato- 

 pharyngeus, and certain accessory and rather irregular bundles of muscular fibres. 



FIG. 1360. 



Condyles 



Internal carotid artery 

 Internal jugular vein 



Central attachment of pharynx 



Internal 

 pterygoid 



Styloid process 



posterior bully 



Stylo- 



pharyngeus 

 Stylo-gloss us 



Stylo-hyoid | 



Stylo-hyoid 

 ligament 



Pharyn- 

 geal 

 aponeu- 

 rosis 



Tip of great cornu of 

 hyoid hum- 



Thyro-hyoid ligament 

 Superior cornu of thyroid 

 cartilage 



Middle 



constrictor 



Inferior constrictor 



uritiulinal muscle of orsophajrtis 



MinrI- of pharynx from In-hind ; jx.ition ,.t minim i-unstiictur has been removed. 



The superior constrictor < Fi^s. i - >V) . 1360) arises from tlu- lower part of the 

 intern. d ptcrv-oi.l pl.itr. hom tin- hamular procc-ss, tin- iHi-rygo-mandiluilar liiianu-nt 

 which is stretched jron it to tlu- linmila of the lower jaw, from the neighboring- end 

 of the invlo -hvoi.l rid^.-, and from the side of the tongue. From this origin the fibres 

 pass backward to meet their fellows in a median raphe, which extends almost the 



