SALIVARY GLANDS OF THE MOUTH. 



99 



Palato-pharyngeus. — Another small muscle, included in the pos- 

 terior half-arch, arisi?ig from the soft palate, and inserted into the 

 side of the pharynx. It draws the palate down and the pharynx up. 



Circumjlexus or T'ensor palati. — Origin, from the spinous pro- 

 cess of the sphenoid bone, and the contiguous portion of the Eusta- 

 chian tube. Insertion, by a tendon, which winds around the 

 hamulus or hook of the internal pterygoid process, into the posterior 

 and crescentic edge of the palate bone. Use ; to extend the soft 

 palate transversely. 



Levator palati. — Origin, from the petrous portion of the tem- 

 poral bone and Eustachian tube. Insertion, into the soft palate. 

 Use ; it draws the palate upwards. 



Azygos uvulcB. — Is in the middle of the uvula and soft palate. 

 Its contractions shorten the uvula. 



SALIVARY GLANDS OF THE MOUTH. 

 The salivary glands are of a light pink colour, and their secretion 

 is of great service in mastication and digestion. They are three in 

 number — the parotid, submaxillary, and sublingual. 



Fig. SL 



The parotid is the largest of the three, its shape is irregular ; it 

 has no capsule, and is merely covered by the superficial fascia of 

 the neck. The position it occupies^ is in the space behind the 

 ramus of the lower jaw and the mastoid process, it extends in front, 

 so as to cover a portion of the masseter muscle ; in depth it reaches 

 towards the styloid process, and superficially it is covered by the 

 skin; its structure is lobulated, and its duct, called the duct of 



