SUPERIOR MAXILLARY. 



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muscle and the temporal fascia about an inch above the zygoma, and is dis- 

 tributed to the integument covering the temple and side of the forehead, com- 

 municating with the facial and auriculo-temporal branch of the inferior maxil- 

 lary nerve. 



The malar branch passes along the external inferior angle of the orbit, 

 emerges upon the face through a foramen in the malar bone, and perforating 

 the Orbicularis Palpebrarum muscle on the prominence of the cheek, joins with 

 the facial. 



The spheno -palatine branches, two in number, descend to the spheno-palatine 

 ganglion. 



The posterior dental branches arise from the trunk of the nerve just as it is 

 about to enter the infraorbital canal ; they are two in number, posterior and 

 anterior. 



Fig. 344. Distribution of the Second and Third Divisions of the Fifth Nerve 

 and Sub-maxillary Ganglion. 



Sentory Jtoot 



Auricula -Tic. 



The posterior branch passes from behind forwards in the substance of the 

 superior maxillary bone, and joins opposite the canine fossa with the anterior 

 dental. Numerous filaments are given off from the lower border of this nerve, 

 which form a minute plexus in the outer wall of the superior maxillary bone, 

 immediately above the alveolus. From this plexus filaments are distributed to 

 the pulps of the molar and second bicuspid teeth, the lining membrane of the 

 antrum, and corresponding portion of the gums. 



The anterior branch is distributed to the gums and Buccinator muscle. 



The anterior dental, of large size, is given off from the superior maxillary 

 nerve just before its exit from the infraorbital foramen ; it enters a special canal 

 in the anterior wall of the antrum, and anastomoses with the posterior dental. 

 From this nerve some filaments are distributed to the incisor, canine, and first 



