182 



DIGESTION 



from the fundus. The parietal ("oxyntic") cells in the glands of the 

 fundus probably prepare the free hydrochloric acid found in the stomach, 

 and perhaps, as Maly supposes, from the sodium chloride of the blood 

 by this reaction: 



NaH. 2 P0 4 + NaCl = Na,HPO 4 + HC1. 



FIG. 85 



Section of the mucosa of the cardiac end of the stomach: a, gland mouth; b, cardiac gland- 

 tube, "chief cells;" c, parietal cells; d, basement-membrane of connective tissue. This extends 

 between the tubules and carries the vascular elements to these structures; e, interglandular 

 connective tissue; /, general epithelial surface. (Bates.) 



The fact that it is producible by the glands by direct stimulation during 

 fasting seems to negate the theory that it is produced immediately from 

 the sodium chloride of the food. It seems probable that much remains 

 to be learned concerning the precise functions of the glands of the gastric 

 antrum. 



THE MOVEMENTS OF THE STOMACH have long been a fertile subject 

 for description, but only recently, with the use of the much revealing 



