THE PALATE 



945 



The Tensor Palati— nanicd from its action on the soft palate— is a thin, flat 

 and narrow sheet. ' ' 



Origin. — (1) The scaphoid fossa at the root of the internal pterygoid plate; 

 (2) tlie alar spine of the sphenoid; (3) the outer side of the pharyngeal extrem- 

 ity of th(> Eustachian tube. 



Insertion. — ( 1 ) into the transverse ridge on tlic under surface of the horizontal 

 plate of the palate bone; (2; the aponeunjsis of the soft palate. 



Fig. 558b.— Vikw of Muscles of Soft Palatk, as seen from withtx riri-: Pharynx. 



(Modified from Bourgerv. ) 



Pharyngeal 

 aponeurosis 



Levator palati 



Tensor palati 



Azygos uvulae 

 Hamular process 



Palato- 

 pharyngeus 



Crico-arytenoideus 

 posticus 



EUSTACHIAN TUBE 

 Levator palati 



Palato-pharyngeuB 



- Superior constrictor 



Thyroid cartilage 



_ Cricoid cartilage 



(ESOPHAGUS 



Structure. — Its l)elly as it descends bttwei-n the internal jitervgoid nuiscle and 

 the internal pterygoid plate is muscular. On approaching the hamular ])roee.<s it 

 becomes tendinous, and continues so to its insertion. A ])ursais interposed between 

 the hamular process and the tendon. The belly of the mu.^cle is at nearly a right 

 angle with its tendon. 



Nerve-supply. — From the otic ganglion on the mandil)ular divi.sion of the liftli 

 nerve. 



GO 



