316 FUNCTIONS OF THE NERVOUS SYSTEM. 



Fig. 154. [Fig. 155. 



1 3 



Origin and distribution of the Eighth pair of nerves. 

 1, 3, 4, the medulla oblongata; 1, the corpus pyrami- 

 dale of one side ; 3, the corpus olivare ; 4, the cor- 

 pus restiforme ; 2, the pons Varolii ; 5, the facial 

 nerve ; 6, the origin of the glosso-pharyngeal nerve ; 

 7, the ganglion of Andersch ; 8, the trunk of the nerve; 

 9, the spinal accessory nerve ; 10, the ganglion of the 

 pneumogastric nerve; 11, its plexiform ganglion; 

 12, its trunk; 13, its pharyngeal branch forming the 

 pharyngeal plexus (14) assisted by a branch from the 

 glosso-pharyngeul (-) and one from the superior la- 

 ryngeal nerve (15) ; 1C, cardiac branches; 17, recur- 

 rent laryngeal branch ; 18, anterior pulmonary 

 branches; 19, posterior pulmonary branches; 20, 

 cusophageal plexus ; 21, gastric branches; 22, origin 

 of the spinal accessory nerve; 23, its branches dis- 

 tributed to the sterno-mastoid muscle ; 24, its branches 

 to the trapezius muscle. 



A view of the distribution of the Glosso-Pha 

 ryngeal Pneumogastrio and Spinal Accessory 

 Nerves, or the Eighth pair ; 1, the inferior max- 

 illary nerve ; 2, the gustatory nerve ; 3, the 

 chorda-tympani ; 4, the auricular nerve; 5, its 

 communication with the portio dura; G, the fa- 

 cial nerve coming out of the stylo-mastoid fora- 

 men ; 7, the glosso-pharyngeal nerve ; 8, branch- 

 es to the stylo- pharyngeus muscle; 9, the pha- 

 ryngeal branch of the pneumogastric nerve 

 descending to form the pharyngeal plexus; 10, 

 branches of the glosso-pharyngeal to the pha- 

 ryngeal plexus ; 11, the pneumogastric nerve ; 

 12, the pharyngeal plexus; 13, the superior la- 

 ryngeal branch ; 14, branches to the pharyngeal 

 plexus; 15, 15, communication of the superior 

 and inferior laryngeal nerves ; 16, cardiac 

 branches ; 17, cardiac branches from the right 

 pneumogastric nerve ; IS, the left cardiac gan- 

 glion and plexus; 19. the recurrent or inferior 

 liiryngeal nerve; 20, branches sent from the 

 curve of the recurrent nerve to the pulmonary 

 plexus; 21, the anterior pulmonary plexus; 22, 

 22, the oesophageal plexus.] 



