THE STOMACH. 



391 



but extremely numerous in the right. In this region they are separated 

 from each other by minute processes resembling papillae ; but the latter are 

 only met in the vicinity of the pylorus. 



The gastric mucous membrane is composed of an epithelial layer and a 

 corium, in which is distinguished a glandular and a muscular layer. The 

 epithelium is stratified and tesselated in the left compartment, simple and 

 cylindrical in the right sac, where it covers the little mucous processes 

 that separate the glandules, and penetrates more or less deeply into the 

 interior of these. 



In the left side there are found some glandular organs analogous to 

 those of the oesophagus, but the real glandular layer belongs only to the 



Fisr. 187. 



Fig. 188. 



PEPTIC GASTRIC GLAND. 



a, Common trunk ; b, 6, Its chief branches ; 

 c, c, Terminal cseca, with spheroidal glund- 

 cells. 



PORTIONS OP ONE OK THE CJF.CA. MORE 

 HIGHLY MAGNIFIED, AS SEEN LONGITUDI- 

 NALLY (A), AND IN TRANSVERSE SEC- 

 TION (B). 



a, Basement membrane; 6, Large glandular 

 cell ; c, Small epithelial cells surrounding 

 the cavity 



right side. There are found multitudes of parallel tubular glands, united 

 by a small quantity of delicate connective tissue which is very rich in nuclei. 

 They secrete the gastric fluid, or furnish the mucus that covers the surface 

 of the epithelium : they are consequently distinguished as pepsine (or peptic), 

 and mucous glands, the former being much more numerous than the latter. 



They are composed of a simple straight tube at their origin (excretory 

 duct), which frequently divides into two or more flexumis tubes that 



