524 



NERVOUS SYSTEM 



the first branch is the orbital, which passes into the orbit, giving off 

 one branch, the temporal, which passes through the temporal fossa 

 by a foramen in the malar bone and is distributed to the integument on 

 the temple and the side of the forehead. Another branch, the malar, 

 which likewise emerges by a foramen in the malar bone, is distributed 

 to the integument over this bone. In the spheno-maxillary fossa, are 

 also given off two branches, which pass to the spheno-palatine, or 

 Meckel's ganglion. From this portion of the nerve, branches are 

 given off, the two posterior dental nerves, which are distributed to the 

 molar and bicuspid teeth, the mucous membrane of the corresponding 



alveolar processes and 

 to the antrum. 



In the infrab'rbital 

 canal, a large branch, 

 the anterior dental, is 

 given off to the teeth 

 and mucous membrane 

 of the alveolar processes 

 not supplied by the pos- 

 terior dental branches. 

 This branch anasto- 

 moses with the posterior 

 dental. 



The terminal branches 

 upon the face are dis- 



tributed to the lower 

 (the 



Fig. 128. Superior maxillary division of the fifth (Hirschfeld) . 



i, ganglion of Gasser ; 2, lachrymal branch of the ophthalmic 

 division; 3, superior maxillary division of the fifth ; 4, orbital 

 branch; 5, lachrymo-palpebral filament ; 6, malar branch; 7, 

 temporal branch ; 8, spheno-palatine ganglion ; 9, Vidian nerve ; 

 10, great superficial petrosal nerve ; n, facial nerve ; 12, branch branches), to the side 

 of the Vidian nerve; 13-, anterior and two posterior dental r f i /fVi/=> nacal 



branches ; 14, branch to the mucous membrane of the alveolar pro- ' 



cesses ; 15, terminal branches of the superior maxillary division ; branches), anastomosing 

 16, branch of the facial. ',11 i i i r 



with the nasal branch of 



the ophthalmic, and to the integument and mucous membrane of the 

 upper lip (the labial branches). 



The inferior maxillary is a mixed nerve, composed of the inferior 

 division of the large root and the entire small root. The distribution 

 of the motor filaments has already been described. This nerve passes 

 out of the cranial cavity by the foramen ovale, and then separates into 

 the anterior division, containing nearly all the motor filaments, and the 

 posterior division, which is chiefly sensory. The sensory portion breaks 

 up into the following branches : 



i. The auriculo-temporal nerve supplies the integument in the tem- 

 poral region, the external auditory meatus, the integument of the ear, the 



