THE ALIMENTARY CANAL 



365 



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

 is penetrated hy the h ranched tuhulo-acinar mucous duodenal (Brun- 



Villu* 



Gland of LieberJcuhn 



Muscnlaris mncosse Mis? 



Duct of B runner' a 

 gland 



Brunner's gland- 

 Blood-vessel 



Circular muscle layer 



Ganglion cells of. 

 Auerbach's plexus 



Jjongitudinal muscle 

 layer 



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



X 34. 



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



ner's) glands. The muscularis mucosse forms a complete muscular 

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



