THE NECK, ANTERIOR. 119 



It furnishes filaments to the submaxillary ganglion and 

 hypoglossal nerve (at its terminus). 



The lingual supplies the mucous membrane of the side 

 of the tongue and the floor of the mouth, and the sub- 

 lingual gland. 



The Otic Gang-lion. 



This small ganglion (one-sixth of an inch in longest 

 dimension) lies internal to the inferior dental nerve, in 

 front of the middle meningeal artery, and close under the 

 foramen ovale. 



Its roots are sensory (and motor), from inferior maxillary 

 (through the internal pterygoid) nerve ; motor, from the 

 small (lesser) petrosal nerve (which brings fibres from the 

 seventh and ninth nerves); and sympathetic, from the plexus 

 on the middle meningeal artery. Its branches of distribu- 

 tion are supplied to the tensor palati and tensor tympani 

 muscles, to the parotid gland (by way of the auriculotem- 

 poral nerve with which these filaments pass), and to the 

 chorda tympani. 



The Submaxillary Gang-lion. Fig. 18. 



The submaxillary ganglion lies between the lingual 

 nerve, Wharton's duct, and the anterior portion of the sub- 

 maxillary gland. It is about the size of the head of a 

 common pin. It receives its motor root from the chorda 

 tympani, the sensory root from the lingual, the sympa- 

 thetic from the plexus upon the facial artery. Its fila- 

 ments are distributed to the submaxillary gland, Wharton's 

 duct, and filaments to the lingual nerve which pass on to 

 the sublingual gland and the tongue. 



The Sublingual Gland. 



This is the smallest of the salivary glands. It lies 

 immediately under the mucous membrane of the mouth, 



