TRIGEMINAL NERVE. 



691 



The otic ganglion gives off (as a continuation of i): i. Motor 

 branches for the tensor tympani muscle and the tensor of the veil of the 

 palate (with which muscle-sense fibers probably are also admixed). 2. 

 One or several connecting branches of the ganglion to the auriculotem- 

 poral nerve are probably conveyed through the root -fibers (2 and 3) 

 from the sympathetic and the glossopharyngeal nerve, which the 

 nerve in question (Fig. 243, A) gives off to the parotid gland (P) in its 

 passage through it. These branches control the salivary secretion of the 

 parotid, as has been pointed out on p. 259. 



Mure, temporal!*. 



Muse, masseter 



N. hypoglossus. 



Platysma myoide . 

 Muse, sternohyoideus. 



Muse, steruothyi eoide 



Muse, oniohyoideus. 



N'n. thoraciei anterlores. 



Mnsc. gplenius. 



Muse, steruocleidomastoideus. 



accessorius 

 Muse, levator anguli scapulae. 



Muse, cucullaris or trapeziua. 

 N. dorsalis scapulae. 



K. axillaris. 



N. thoracic^ Icngn^ 



N. phrenicus. 



FIG. 244. Distribution of the Sensory Nerves of the Head, together with the Situation of the Motor Points on 



the neck. 



SO, Distribution of the supraorbital nerve; ST, supratrochlear nerve; IT, infratrochlear nerve; L, lacrimal nerve; 

 N, ethmoid nerve; IO, infraorbital nerve; B, buccinator nerve; SM, subcutaneous malar nerve; AT, 

 auriculotemporal nerve; AM, great auricular nerve; OMj, greater occipital nerve; OMi, lesser occipital nerve; 

 C-A, third cervical nerve; CS, cutaneous branches of the cervical nerves; CW, situation of the central convo- 

 lutions of the cerebral hemisphere; SC, situation of the speech-center (third frontal convolution). 



Division of the trigeminus causes inflammatory changes in the mucous mem- 

 brane of the tympanum in all possible degrees (in the rabbit). Lesions of the 

 sympathetic or the glossopharyngeal are ineffective. 



The submaxillary or lingual ganglion (Fig. 243, L) lies upon the con- 

 vex arch of the united tympanicolingual nerve and the excretory duct 

 of the submaxillary gland (M), and receives as root -fibers: i. Branches 

 of the chorda tympani (i i). These are related to the salivary secretion 



