CHAPTER VIII. 



STOMACH DIGESTION. 



THE general surface of the stomach is covered by a single 

 layer of cylindrical epithelial cells which also line the orifices 

 of the numerous glands with which the mucous membrane is 

 thickly studded. This single layer of cylindrical cells is marked 

 off from the stratified squamous cells lining the oesophagus by a 

 sharp line of demarcation. The glands of the stomach are tubes 



Fio. 68. 





1 



Diagram of a section of the Wall of the Stomach. a. Orifices of glands 

 with cylindrical epithelium, b. Fundus of glands with spherical and oval 

 epithelium, c. Muscularis mucosse. d. Submucous tissue containing blood- 

 vessels, etc. e. Circular, (/) oblique, and (y] longitudinal muscle coats. 

 h. Serous membrane. 



of which the orifices are conical depressions which divide into 

 two or three tubular prolongations. The outlet or orifice is cov- 

 ered by the common cylindrical epithelium of the surface of the 

 stomach, and the fundus is filled with specific granular cells. 

 The glands dip down into the delicate submucous tissue, the 

 branching tubes lying parallel and exceedingly close together. 



