484 SUBMAXILLARY GANGLION. 



the point of union of the motor root ; internally it rests against the 

 cartilage of the Eustachian tube and tensor palati muscle ; and poste- 

 riorly it is in contact with the arteria meningea media. It is closely 

 adherent to the internal pterygoid nerve, and appears like a swelling 

 upon that branch. 



The branches of the otic ganglion are seven in number ; two of 

 distribution, and five of communication. 



The branches of distribution are, a small filament to the tensor 

 tympani muscle, and one to the tensor palati muscle ; the latter is 

 usually derived from the internal pterygoid nerve, at the point where 

 that nerve is enclosed by the ganglion. 



The branches of communication are, two or three filaments to the 

 outer portion of the inferior maxillary nerve ; one or two filaments to 

 the auricular nerve ; a filament to the chorda tympani ; filaments to 

 the arteria meningea media to communicate with the nervi molles ; a 

 filament which enters the cranium through the foramen spinosum 

 with the arteria meningea media and accompanies the nervus petrosus 

 superficialis minor to the hiatus Fallopii, where it joins the intume- 

 scentia ganglifonnis of the facial nerve ; a filament which enters the 

 cranium through a small canal behind the foramen rotundum to join 

 the Casserian ganglion ; a filament which enters a small canal near the 

 foramen ovale to communicate with the Vidian nerve ; and the 

 nervus petrosus superficialis minor. The latter nerve ascends from the 

 ganglion to a small canal situated between the foramen ovale and 

 foramen spinosum, and passes backwards on the petrous bone to the 

 hiatus Fallopii, where it divides into two filaments. One of these 

 filaments enters the hiatus and joins the intumescentia gangliformis 

 of the facial ; the other passes to a minute foramen nearer the base of 

 the petrous bone and enters the tympanum, where it communicates 

 with a branch of Jacobson's nerve. 



The SUBMAXILLARY GANGLION is a small round or triangular 

 ganglion, situated upon the submaxillary gland, in close relation with 

 the gustatory nerve and near the posterior border of the mylo-hyoi- 

 deus muscle. 



Its branches of distribution, six or eight in number, divide into many 

 filaments, which supply the substance of the submaxillary gland and 

 Wharton's duct. 



Its branches of communication are, two or three from and to the 

 gustatory nerve ; one from the chorda tympani ; and one or two fila- 

 ments which pass to the facial artery and communicate with the 

 nervi molles from the cervical portion of the sympathetic. 



CAROTID PLEXUS. The ascending branch of the superior cervical 

 ganglion enters the carotid canal with the internal carotid artery, and 

 divides into two branches, which form several loops of communication 

 with each other around the artery. These branches, together with 

 those derived from the petrosal branch of the Vidian, constitute the 



