1 70 ELEMENTS OF HISTOLOGY. [chap. xx. 



of the external muscular coat in the alimentary canal, 

 known as the plexus myentericus of Auerbach, the 

 ganglia in the plexus of nerve branches of the sub- 



-a 



r 



Fig. 101. Plexus of fine Sympathetic Nerve-fibres, with Ganglionic 

 Enlargements in the Nodal Points. From the Plexus of Meissner 

 in the Submucous Tissue of the Intestine. 



a, Fine nerve-fibres ; b, groups of ganglion cells interposed between the 

 nerve-fibres. 



mucous tissue in the alimentary canal, and known as 

 Meissner's plexus (Fig. 101), the ganglia in the plexuses 

 of nerve branches in the outer wall of the bladder, in 

 the bronchial wall, in the trachea, the ganglia in con- 

 nection with the nerves supplying the ciliary muscle 

 of the eye, <fcc., belong to the sympathetic system. 



