202 robert k. s. lim 



Summary. 



The gastric miicons membrane is principally formed by 

 relatively simple tubular glands winch become more complex 

 near the orifices of the viscus, especially near the pylorus. 

 The glands are lined by one or more kinds of cells : the following 

 types may be recognized : 



1. Surface mucus-secreting cells, which include the cells 

 lining the surface and the gland-ducts leading therefrom. 



2. Mucoid cells, of which there are two closely allied groups, 

 viz. : 



(a) The cardiac and pyloric cells which form the sole lining 

 of the glands within about 0-2 mm. and 15 mm. of 

 the oesophageal orifices respectively. 

 (h) The mucoid cells proper, which occur in the large inter- 

 vening region (fundus) where they are intermingled 

 with the peptic and oxyntic cells ; they chiefly 

 occupy the superficial or upper part of the gland-tube. 

 B. Peptic cells, which are found (often in conjunction with 

 mucoid cells) within the deep part of the gland : both peptic 

 and mucoid cells were formerly described as ' chief ' or * central ' 

 cells. 



4. Oxyntic cells, which chiefly occupy the upper portion of 

 the gland where they are found between the mucoid cells ; 

 in the deeper portion of the gland they take up a parietal 

 position. 



The interglandular tissue contains basiphil connective-tissue 

 cells, oxyphil leucocytes, and a few cells with large eosinophil 

 globules. 



Literature. 



1. Bensley.— ' Proc. Canad. Inst.', 1897. i. 11. 



2. ' Quart. Journ. Micr. Sci.', 1898, xli. 361. 



3. ' Amer. Journ. Anat.', 1902, ii. 105. 



4. Bohm and Davidoff.— ' Text-book of Histology ', 1914, 2nd edition, 



transl. by G. C. Huber, Philadelphia. 



5. Cade.—' Arch, d'anat. micr.', 1901, iv. 1. 



5 a. earlier, quoted by Schafer.— ' Text-book of Microscopic Anatomy ', 

 1912, 528. London. 



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