748 



PHYSIOLOGY OF DIGESTION AND SECRETION. 



glands arises from the brain in the facial nerve and passes out in the 

 chorda tympani branch (Fig. 289) . This latter nerve, after emergmg 

 from the tympanic cavity through the Glaserian fissure, joins the 



Ganglion. 

 Fig. 288. — Schematic representation of the course of the cerebral fibers to the 



lingual nerve. After running uith this nerve for a short distance, 

 the secretory (and vasodilator) nerve fibers destined for the sub- 

 maxillary and sublingual glands branch off and pass to the glands. 



TnferiofTflaxillaru 



Sui>-7M.axiUo.rf-t. 



Fig. 289. — Schematic representation of the course of the chorda tympani nerve to 

 submaxillary gland. 



following the course of the ducts. Where the chorda tympani fibers 

 leave the lingual there is a small ganglion which has received the 

 oame of submaxillary ganglion. The nerve fibers to the glands 



