HISTOLOGY. 71 



membrane, and beneath the basement membrane there 

 is a layer of smooth muscle, called muscularis mucosie. 

 Along the course of the membrane there are several 

 openings which represent the months of glands. 

 These glands are simply an infolding of the mucous 

 membrane. Several types of glands are recognized. 

 All of them are some type of a tube. See cut for 

 types of glands. The different glands will be dis- 

 cussed as they are studied. 



