348 



A MANUAL OF PHYSIOLOGY. 



glands have been distinguished : (i) The glands of the cardia. In 

 man these occupy a small portion of the mucous membrane at 

 the cardiac end, near the orifice of the oesophagus. Some of the 

 glands are single tubules, but others have two or more tubules 

 opening into a common duct. Both are lined by a single layer 

 of short columnar epithelium, which contains granules. (2) The 

 glands of the pyloric canal or antrum. These consist of short. 



FIG. 138. A FUNDUS GLAND OF SIMPLE FIG. 139. A FUNDUS GLAND 



FORM FROM THE BAT'S STOMACH (OsMic 

 ACID PREPARATION) (LANGLEY). 



c, columnar epithelium of the surface ; 

 n, neck of the gland with chief or central 

 and parietal cells ; /, base, occupied only by 

 chief cells, which show the granules accu- 

 mulated towards the lumen of the gland. 



PREPARED BY GoLGl's METHOD, 

 SHOWING THE MODE OF COM- 

 MUNICATION OF THE PARIETAL 

 CELLS WITH THE GLAND - LUMEN 



(SCHAFER, AFTER E. MlJLLER). 



branched tubules, which open by twos and threes into long ducts. 

 (3) The glands of the fundus or oxyntic glands, occupying the 

 intermediate and greater portion of the organ. The gland 

 tubules are long and seldom branched, and the ducts, into each 

 of which open from one to three tubules, are relatively short. 

 The secreting parts of both kinds of glands are lined by short 

 columnar granular cells ; and in the pyloric tubules no others 



