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mucous layer. As indicated above, the submucous plexus is 

 connected with the myenteric plexus by fibrous commissures. 

 Fibers which have their origin in the ganglia of the submucous 

 plexus may be traced into these commissures. Furthermore, 

 nerve-fibers may be traced from the ganglia of the submucous 

 plexus into proximity with the digestive glands where many of 

 them terminate on gland-cells and into the gastric folds and 



Fig. 2 A, from longitudinal section of small intestine of kitten, showing 

 ganglia of myenteric and submucous plexuses with connecting commissures; 

 B, from section through posterior region of oesophagus of ten day embryo of 

 chick; C, from section through cardiac region of stomach of cat, showing nerve- 

 fibers extending from submucous plexus into gastric fold. 1, tunica propria; 

 2, muscularis mucosae; S, submucosa; 4, muscularis; c, commissure connecting 

 ganglia of myenteric and submucous plexuses; cm, circular muscles ; cs, commissure 

 connecting ganglia of submucous plexus; ep, epithelium;/, nerve-fibers ; /^ nerve- 

 fibers extending from submucous plexus into gastric fold; Im, longitudinal muscles; 

 M, ganglion of myenteric plexus; Mf, fibers in myenteric plexus; pc, parietal cells; 

 S, ganglia of submucous plexus. 



