144 



STUDENTS HISTOLOGY 



FIG. 97. SECTION OF A SMALL PORTION OP THE PAROTID GLAND. STAINED WITH 

 H^EMATOXYLIN AND EOSIN (X 250). 



A. Narrowing of the duct from a small lobule, before entering a larger duct. 



B. Dilatation of a duct after leaving a small lobule. 



C. Primary lobules, in nearly L. S. 



D. Acini in T. S., showing the minute lumen. 



E. Connective tissue supporting the gland. 



F. Striated muscular fiber adjacent to the gland. 



G. Adipose tissue in the loose areolar tissue. 



hedral, and are bluntly pointed. The cells so nearly fill the acini 

 as to leave a small and not easily recognized lumen. 

 The gland is richly supplied with blood-vessels. 



THE SUBMAXILLARY GLAND 



The submaxillary is presented as an example of a typical mixed 

 gland. The general arrangement is not unlike that of the other 

 salivary glands. Its peculiarity appears in the parenchyma, and 

 will be noticed later. 



Pure mucous glands are found in the submucosa of the mouth, 

 tongue, fauces, trachea, and the larger bronchi. 



