OPENINGS OP PHARYNX. 



127 



superiorly, where it is fixed to the margins of a groove between the petrous 

 part of the temporal and the sphenoid bone; but it increases in width as 

 it is directed downwards to the pharynx, and ends by a wide aperture 

 inside the internal pterygoid plate, on a level with the inferior meatus. 

 Its opening in the pharynx is oval in form ; and the inner side, which is 

 larger than the outer, projects forwards, giving rise to a trumpet-shaped 

 mouth. 



Fig. 29. 



A. Levator palati. 



B. Tensor palati. 



c. Salpingo-phavyngeus. 



D. Azygos uvulse. 



E. Internal pterygoid muscle, 

 r. End of the Eustachian tube. 

 fl. Posterior naris. 



H. Mouth cavity. 

 I. Anterior pillar of the fauces. 

 K. Apertures of the tonsil. 

 L. Posterior pillar of the fauces. 

 N. Opening of the larynx. 

 o. Opening of the resophagus. 

 p. Uvula. 



0. Superficial part of Palato-pharyn- 

 geus. 



fr 



C 



fcfl 

 JD 



~O 



O 



INTERNAL VIEW OF THE PHARNYX (Illustrations of Dissections). MUSCLES OF THE PALATE, AND 



NAMED PARTS. 



This part of the tube is constructed by a triangular piece of cartilage, 

 whose margins are bent downwards so as to inclose a narrow space; but 

 at the under aspect the cartilage is deficient, and the wall is formed by 

 fibrous membrane. Closely united to the pterygoid plate, the tube is 

 covered by the mucous membrane ; and through it the mucous lining of 

 the cavity of the tympanum is continuous with that of the pharynx. 



The space included between the root of the tongue and the arches of 

 the soft palate on opposite sides is called the fauces. It is wider below 

 than above; and on each side lies the tonsil. 



