354 



THE DIGESTIVE SYSTEM 



The character of the gastric glands differs somewhat in various 

 portions of the stomach. The three varieties, according to their dis- 

 tribution, are known 

 as the fundus glands, 

 the pyloric glands, and 

 the cardiac glands. 



THE FUNDUS 

 GLANDS (Peptic 

 Glands). These are 

 somewhat branched 

 tubular glands which 

 possess short ducts, 

 the crypts or foveolce,, 

 and relatively long se- 

 creting portions, sev- 

 eral of which open, by 

 means of short con- 

 stricted portions, the 

 necks of the glands, 

 into the bottom of 

 each crypt. 



The excretory 

 ducts or crypts are 

 lined with tall colum- 

 nar cells which possess 

 a remarkably clear cy- 

 toplasm distally, and 

 whose nuclei lie at the 

 proximal or attached 

 ends of the cells. This 



FIG. 330.- 



-THE MUCOSA OF THE FUNDUS REGION OF 

 THE DOG'S STOMACH. 



epithelium rests upon 

 a distinct basement 

 membrane of reticular 

 tissue (Mall) ; it is 



a, gastric crypts; &, neck region, and c, fundus por- 

 tions of the gastric glands, the parietal cells being 

 much more abundant in the former; d, muscularis mu- 

 cosse; e, submucosa. Hematein and eosin. Photo. 

 X 80. 



also continued over that portion of the corium which occupies the inter- 

 vals between adjacent ducts, where it forms the true lining epithelium of 

 the stomach. Its cells secrete a clear muco-albuminous fluid. 



Between the distal ends of the cells terminal bars occur ; they possess 

 also indistinct cuticular borders. 



The secreting portion, or fundus, of the gland is five to eight times 



