344 NEUROLOGY, OR ANATOMY OF NERVOUS SYSTEM 



The gustatory or lingual nerve lies at first beneath the 

 external pterygoid, internal to the dental nerve. Here a branch 

 from the dental may cross the internal maxillary to join it. 

 The chorda tympani also joins it. The nerve now runs along 

 the inner side of the ramus of the jaw, and crosses the upper 

 constrictor to the side of the tongue above the deep part of 

 the submaxillary gland; lastly, it runs below Wharton's duct, 

 and superficially along the side of the tongue to its apex. It 

 communicates with the facial through the chorda tympani, 

 the submaxillary ganglion, inferior dental, and hypoglossal. 

 It supplies the mucous membrane of the mouth and tongue 

 (anterior two-thirds), the gums, sublingual gland, and the 

 filiform and fungiform papillae. 



The submaxillary ganglion is placed above the deep part of 

 the gland, and receives filaments from the gustatory and from 

 the inferior maxillary nerve through the chorda tympani; also 

 filaments from the sympathetic plexus around the facial artery. 



Branches. Five or six to gland, Wharton's duct, and the 

 mucous membrane of the mouth. 



The otic ganglion is of a reddish color, oval and flattened 

 in form, and f inch in diameter. It lies on the inferior maxillary 

 nerve (deep surface) below the foramen ovale, and behind it 

 is the middle meningeal artery. It communicates with the 

 inferior maxillary through its internal pterygoid branch, with 

 the glossopharyngeal (possibly sensor) and facial (possibly 

 motor) through the small superficial petrosal nerve, continud 

 from the tympanic plexus, and with the plexus on the middle 

 meningeal artery. 



Branches. One to the tensor tympani, to tensor palati, 

 to chorda tympani; and to the auriculotemporal nerve two, 

 and sphenoidal branch to the sphenopalatine ganglion. 



The Sixth Nerve 



The sixth or abducens has an apparent origin in the groove 

 between the pons and medulla, and a deep origin from the 

 fasciculus teres. It runs to the lower and outer part of the 

 dorsum sellre, and traverses the floor of the cavernous sinus 

 external to the carotid artery, and, receiving branches from 

 the cavernous and carotid plexuses, enters the orbit by the 



