THE ALIMENTARY TRACT. 



285 



^^ 



M 



\ 



SM 



^/ 



\ 





T 



V. 



?- 



B 







'^.—vj 



/3. [The glauds of the fundus of the stomach ^ are not so complex 



as the typical glands of the oesophagus. The cells at the mouth 



of the gland are continued ^. „, 



Fis:. i86. 



into fine processes (Fig. 187), 

 and their outer parts contain 

 mucigen. The cells of the 

 neck of the gland are more 

 cubical J and towards the 

 lower part of the neck are 

 mucous cells. The cells of 

 the body of tlie gland are of 

 irregular shape^ and so placed 

 that the nucleus of one cell 

 faces the junction of two 

 cells on the opposite side 

 (Lang'ley). These cells are 

 very finely granular.] 



y. [The glands of the py- 

 loric end of the stomach have 

 been compared with the 

 mouths and necks of the 

 glands of the fundus (Partsch, 

 Langley). The cells are of 

 two kinds only (Fig*. 188). 

 The cylindrical cells of the 

 surface of the stomach are 

 continued into the gland 

 where they become shorter 

 and sub-cubical; these form 

 the greater part of the 

 gland. The cells at the 

 deepest portion of the gland are more rounded^ and resemble the 

 mucous cells in the neck of the glands of the fundus.] 



Ô. [Between these well-marked groups of glands are various 

 transitional forms. The transition from oesophageal to gastric 

 glands is not a continuous one^ as glands resembling those of the 

 stomach can be found nearer the oesophagus than other glands, which 



' A transverse section through the mucous membrane of the fundus of the stomach 

 of Eana esculenta is shown in Plate II, Fig. 187. Alcohol preparation, doubly 

 stained with carmine and anilin blue. After Biedermann. (Obj. II, Syst. 7, 

 Hartnack.^/ 



TM 



LM 



fransverse section through one of the loiigitudina 

 folds of stomach of Uana temporaria. To slui» 

 genei'al arrangement of the walls. — G. H. 

 A Transverse layer of musoularis mucosae. 

 B Longitudinal layer of nniscularis mucosae. 

 LM Longitudinal muscular coat. 

 31 Mucous membrane. 

 S3Ï Submucous coat. 

 TM Transverse muscular coat. 



