THE ALIMENTARY CANAL 



365 



identical with that of the stomach except in the duodenum where it 

 is penetrated hy the branched tubulo-acinar mucous duodenal (Brun- 



vm 



Gland of Lieberkii 



Musrn!aris mncosie 



Duct of Brunner's 

 gland 



Circular muscle layer 



Ganglion cells of 

 Auerbach's jilc.fnn 



Longitudinal muscle 

 layer 



FIG. 341. FROM A LONGITUDINAL SECTION THROUGH THE DUODENUM OP A CAT. 



X 34. 



(From Szymonowicz-MacCallum, "Histology and Microscopic Anatomy.") 



HIT'S) glands. The muscularis mucosse forms a complete muscular 

 layer and, except in the duodenum, is not penetrated by the glands. 



