666 



SPECIAL SENSES. 



the carotid canal, where it anastomoses with a branch from the superior cer- 

 vical ganglion, and the other to the mucous membrane of the Eustachian 



FIG. 237. Glosso-pharyngeal nerve (Sappey). 



1, large root of the fifth nerve ; 2, ganglion of Gasser ; 3, ophthalmic division of the fifth ; 4, superior 

 maxillary division ; 5, inferior maxillary division ; 6, 10, lingual branch of the fifth, containing the 

 filaments of the chorda tympani ; 7, branch from the sublingual to the lingual branch of the fifth ; 

 8, chorda tympani ; 9, inferior dental nerve ; 11, submaxillary ganglion ; 12, mylo-hyoid branch of 

 the inferior dental nerve ; 13, anterior belly of the digastric muscle ; 14, section of the mylo-hyoid 

 muscle ; 15, 18, glosso-pharyngeal nerve ; 16, ganglion of Andersch ; 17, branches from the glosso- 

 pharyngeal to the stylo-glossus and the stylo-pharyngeus muscles ; 19, 19, pneumogastric ; 20, 21, 

 ganglia of the pneumogastric ; 22, 22, superior laryngeal nerve ; 23, spinal accessory ; 24, 25, 26, 27 

 28, sublingual nerve and branches. 



tube ; two superior branches are distributed to the otic ganglion and, as is 

 stated by some anatomists, to the spheno-palatine ganglion. 



A little below the posterior foramen lacerum the glosso-pharyngeal sends 

 branches to the posterior belly of the digastric and to the stylo-hyoid mus- 

 cle. There is also a branch which joins a filament from the facial to the 

 stylo-glossus. 



Opposite the middle constrictor of the pharynx three or four branches 

 join branches from the pneumogastric and the sympathetic, to form together 

 the pharyngeal plexus. This plexus contains a number of ganglionic points, 

 and filaments of distribution from the three nerves go to the mucous mem- 

 brane and to the constrictors of the pharynx. The mucous membrane proba- 

 bly is supplied by the glosso-pharyngeal. It is probable, also, that the mus- 

 cles of the pharynx are supplied by filaments from the pneumogastric, which 

 are derived originally from the spinal accessory. 



