172 FUNCTIONS OF THE NERVOUS SYSTEM. 



Fig. 39. [Fig. 40. 



Origin and distribution of the Eighth pair of nerves ; 

 1, 3, 4, the medulla oblongaja; 1, the corpus pyra- 

 midale 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 pha- 

 ryngeal plexus (14) assisted by a branch from the 

 glosso-pharyngeal (8) and one from the superior laryn- 

 geal nerve (15) ; 16, cardiac branches ; 17, recurrent 

 laryngeal branch; 18, anterior pulmonary branches; 

 19, posterior pulmonary branches; 20, cesophageal 

 plexus; 21, gastric branches; 22, origin of the spinal 

 accessory nerve ; 23, its branches distributed to the 

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

 zius muscle. 



A, view of the distribution of the Glosso-Pha- 

 ryngeal Pneumogastric and Spinal Accessory 

 NeBres,orthe Eighth pair; l,the inferior maxillary 

 nerve; 2, the gustatory nerve; 3, the chorda-tym- 

 pani; 4, the auricular nerve; 5, its communication 

 with the portio dura; 6. the facial nerve coming 

 out of the stylo-mastoid foramen; 7, the glonso- 

 pharyngeal nerve; 8, branches to the stylo-pha- 

 ryngeus muscle; 9, the pharyngeal branch of the 

 pneumogastr c nerve descending to form the pha- 

 ryngeal plexus; 10, branches of the glosso-pha- 

 ryngeal to the pharyngeal plexus ; 11, the pneumo- 

 gastric nerve; 12, the pharyngeal plexus; 13, the 

 superior laryngeal branch; 14, branches to the 

 pharyngeal plexus ; 15, 15, communication of the 

 superior and inferior laryngeal nerves; 16, car- 

 diac branches ; 17, cardiac branches from the right 

 pneumogastric nerve ; 18, the left cardiac gan- 

 glion and plexus; 19, the recurrent or inferior 

 laryngeal nerve ; 20, branches sent from^the curve 

 of the recurrent nerve to the pulmonary plexus; 

 21, the anterior pulmonary plexus; 22,22, the osso- 

 phagcal plexus.] 



