84 THE PHYSIOLOGY OF DIGESTION AND ABSORPTION 



flat surface on the duodenal side to prevent the regurgita- 

 tion of food. The oblique fibers are supposed to be contin- 

 uous with the circular fibers of the esophagus. They extend 

 over the greater pouch from a point just to the left of the 

 esophageal opening to a point on the greater curvature, about 

 the junction of the middle and pyloric thirds. Here, at the 



Serosa. _: 



FIG. 36. V. S. Wall of human stomach. 

 E, epithelium; G, glans; Mm, muscularis mucosae. 15. (Stirling.) 



fight hand limit of the oblique fibers, the stomach is said 

 during digestion to be considerably constricted, so that a tem- 

 porary sphincter is established. This is the point of separa- 

 tion between the fundus and the antrum pylori, and is some- 

 times called the sphincter antri pylorici. The fibers of the 

 muscular coat are of the plain variety, as is all the gastro-in- 



