NEUROLOGY 



I 



dorsal nucleus or inferior salivatory nucleus of the medulla. Fibers (postganglionb) 

 from the otic ganglion with which these form synapses are supposed to pass with 

 the auriculotemporal nerve to the parotid gland. A slender filament (sphenoidal) 

 ascends from it to the nerve of the Pterygoid canal, and a small branch connects 

 it with the chorda tympani. 



Its branches of distribution are: a filament to the Tensor tympani, and one to 

 the Tensor veli palatini. The former passes backward, lateral to the auditory 

 tube; the latter arises from the ganglion, near the origin of the nerve to the Ptery- 

 goideus internus, and is directed forward. The fibers of these nerves are, however, 

 mainly derived from the nerve to the Pterygoideus internus. 



SUPRATROCHLI 

 SUPRAORBITA 



INFRATROCHLEAR 



NASAL NERVE 



BUCCAL NER 



MENTAL NERVE 



TEMPORAL BR. 

 "OF TEMPORO-MALAR 



MALAR BR. OF 

 "TEMPORO -MALAR 



AURICULO-TEMPORAL 

 NERVE 



FIG. 784. Sensory areas of the head, showing the general distribution of the three divisions of the fifth nerve. 



(Modified from Testut.) 



Submaxiilary Ganglion (ganglion submaxillare) (Fig. 778). The submaxillary 

 ganglion is of small size and is fusiform in shape. It is situated above the deep 

 portion of the submaxillary gland, on the hyoglossus, near the posterior border 

 of the Mylohyoideus, and is connected by filaments with the lower border of the 

 lingual nerve. It is suspended from the lingual nerve by two filaments which join 

 the anterior and posterior parts of the ganglion. Through the posterior of these 

 it receives a branch from the chorda tympani nerve which runs in the sheath of 

 the lingual; these are sympathetic efferent (preganglionic) fibers from the facial 

 nucleus or the superior salivatory nucleus of the medulla oblongata that terminate 

 in the submaxillary ganglion. The postganglionic fibers pass to the submaxillary 

 gland, it communicates with the sympathetic by filaments from the sympathetic 

 plexus around the external maxillary artery. 



Its branches of distribution are five or six in number; they arise from the lower 

 part of the ganglion, and supply the mucous membrane of the mouth and the duct 

 of the submaxillary gland, some being lost in the submaxillary gland. The branch 

 of communication from the lingual to the forepart of the ganglion is by some 

 regarded as a branch of distribution, through which filaments pass from the gan- 

 glion to the lingual nerve, and by it are conveyed to the sublingual gland and the 

 tongue. 



