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CHAPTER XVII 

 SALIVARY GLANDS AND PANCREAS 



THE salivary glands include the smaller secreting glands of 

 the oral cavity and three pairs of large compound tubulo-acinar 

 glands, the parotid, submaxillary, and sublingual glands. All 



these are of the tubulo-acinar type, 

 but certain ones secrete a mucous fluid 

 while others produce an albuminous 

 secretion which contains no mucous. 

 The former are collectively known as 

 the mucous, the latter as the serous 

 salivary glands. Still other salivary 

 glands secrete a fluid which is inter- 

 mediate in composition, and as these 

 glands contain certain alveoli which 

 resemble those of the mucous, and 

 others which are similar to those of 

 the serous glands, this type is known 

 as mixed salivary glands. 



The salivary glands may therefore 

 be subdivided into : 



I. Mucous glands: sublingual, 

 glands of Nuhn, and the mucous 

 glands of the mucosa of the lips, 

 cheeks, and tongue. 



II. Mixed glands : submaxillary. 



III. Serous glands : parotid, and 

 v. Ebner's glands at the base of the 

 tongue. 



The form of the salivary glands 

 will be appreciated by the accompany- 

 ing diagram (Fig. 247) which repre- 

 sents one of the smaller glands of this 



FIG. 247. SEMIDIAGRAMMATIC REP- 

 RESENTATION OF A SMALL MU- 

 COUS GLAND FROM THE ORAL 

 MUCOSA OF A RABBIT. 



a, mucous alveoli ; , epithelium 

 of the oral mucosa ; m, mouth of 

 the glandular duct* x 70. (After 

 Kolliker.) 



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