THE STOMACH 



127 



is much thickened at the pylorus to form the pyloric 

 sphincter, and shghtly thickened at the cardiac end to 

 form the cardiac sphincter, and opposite the incisura 

 angularis to form the " transverse band." 



Fig. 27. — ^Position of human stomach after a bismuth meal (Hertz, 

 from Starling's Principles of Physiology). 0, asophagus ; F, fundus ; 

 I. A, incisura angularis. 



3. An innermost obUque layer forming two bands 

 passing from the cardia, one along the anterior, the other 

 along the posterior surface. Near the pylorus they termi- 

 nate in the circular layer. 



The Secretion of Gastric Juice 



As in the case of the sahvary glands, our knowledge of 



