66 PHYSIOLOGY. 



the chorda tympani; in the parotid the auriculo-temporal. The 

 nerve playing against them both is the cervical sympathetic. 



The parotid gland receives fibers from the bulbar origin of 

 the autonomic system through the glosso-pharyngeal, then by the 

 tympanic branch of this nerve or nerve of Jacobson; then by the 

 small superficial petrosal nerve through which it reaches the otic 



Fig. 12a- Schema of Nerves of Parotid Gland. 



GA, Ganglion of Andersen. IX, Ninth cranial or glosso-pharyngeal nerve. 

 NJ, Nerve of Jacobson, or tympanic nerve. VII, Facial nerve. Gg, Geniculate 

 ganglion. GPN, Great petrosal nerve. SPN, Small petrosal nerve. V, Fifth 

 cranial nerve. IMN, Inferior maxillary nerve. AT, Auriculo-temporal. OG, 

 Otic ganglion. SphG, Spheno-palatine ganglion. CS, Cervical sympathetic. 

 KCG, Superior cervical ganglion. 8F, Post-ganglionic sympathetic fibers. P, 

 Parotid. 



ganglion; then by the post-ganglionic fibers by the auriculo-tem- 

 poral branch of the inferior maxillary of the fifth nerve to the 

 parotid. It receives, as a sympathetic nerve, post-ganglionic fibers 

 from the superior cervical ganglion, which reach here by the cervical 

 sympathetic. 



The submaxillary and sublingual glands receive their autonomic 



