THE INFERIOR MAXILLARY NERVE. 



245 



und d. Poms crotaphitico-buccinatorius," Anat. Anz., vi, 1891 ; U. G-rosse, " Ueb. d. Foramen 

 pterygo-spinosum u. d. Foramen crotaphitico-buccinatorium." Anat. Anz., viii, 1893 ; J. Yule 

 Mackay, in Report of Committee of Collective Investigation of Anat. Soc., Journ. Anat., 

 xxviii, 1893, p. 07.) 



The deep temporal nerves (figs. 152 and 1G2) are usually three in number, 

 but are subject to considerable variety in their arrangement. The anterior is given 

 off by the buccal nerve after it has perforated the external pterygoid, and ascends 



Fig. 162. VIEW OP THE BRANCHES OP THE INFERIOR MAXILLARY NERVE PROM THE OUTER SIDE. 

 (From Sappey, after Hirschfeld and Leveille. ) | 



The zygoma and part of the ramus of the lower jaw have been removed ; the dental canal has been 

 opened up ; the lower part of the temporal muscle has been taken away, and the masseter muscle turned 

 down : 1, masseteric nerve ; 2, posterior deep temporal nerve ; 3, buccal nerve ; 4, branch of the facial ; 

 5, anterior deep temporal nerve ; 6, filaments given by the buccal to the external pterygoid muscle ; 7, 

 middle deep temporal nerve ; 8, auriculo-temporal nerve ; 9, its temporal branches ; 10, its branches 

 to the meatus and auricle ; 11, its union with the facial ; 12, lingual nerve ; 13, mylo-hyoid nerve ; 

 14, inferior dental nerve ; 15, its twigs to the teeth ; 16, mental branch ; 17, branch of the facial 

 uniting with the mental. 



to supply the foremost part of the temporal muscle. The middle passes outwards 

 above the external pterygoid and turns upwards close to the bone to enter the deep 

 surface of the muscle. The posterior is generally conjoined with the masseteric 

 nerve, and, taking a course similar to the middle branch, ramifies in the hinder part 

 of the muscle. The number of these nerves is frequently reduced by the union of 

 the middle with either of the other branches. 



The masseteric nerve likewise passes above the external pterygoid, and is 

 directed nearly horizontally outwards at the posterior border of the temporal 

 muscle, and through the sigmoid notch of the lower jaw, to the masseter, which it 



