Till: /.M.Y/.I/, nl; /:vr/;/'//.i/./r \i l;\ 1 9. 71:: 



frnin the superior maxillary nerve at the orbital hiatus, from a trunk common 

 tn it ami the nasal and staphylin branches; it passes into the palatine canal 

 with the palate-labial artery, which it follows to the, foramen iiirisivuni, 

 whnv it gj 



During its course in the palatine canal, this nerve throws off two or three 



small lilaments, which escape by particular foramina to the anterior part of 



ft palate wcd'mn ixtlntine nerve. Frequently they arise from a C'.miin >n 



trunk before the great palatine nerve enters its canal, and pass to their 



.atiou by particular openings. For the remainder of its extent on the 



roof of the palate, this nerve forms, around the artery it accompanies, a 



plcxiform network similar to that of the ganglionic nerves; the filaments 



escaping laterally from it are sent to the soft parts of the palate, as well as 



to the gums. 



3. STAPHYUN OB POSTERIOR PALATINE NERVK (Fig. 148, 8). The 

 filaments composing this nerve are very easily separated, and frequently 



;omose with those of the preceding nerve. They accompany the 

 palatine artery in the canal of that name, bend in front of the pterygoid 

 process to penetrate the soft palate between the glandular layer and the 

 tunica albuginea. They then become inflected backwards, and ramify 

 either in the mucous and glandular tissues of the velum pendulum, or the 

 pal.ito-pharyngeal and cireurnflexus-palati muscles. This destination, 

 therefore, indicates in this nerve the presence of motor fibres ; we will see 

 hereafter whence they come. 



4. NASAL ou SPHENO-PALATINE NERVE. Springing from the same 

 trunk as the two preceding nerves, thicker than the staphylin, and nearly of 

 the same volume as the anterior palatine, the nasal nerve passes with its 

 artery into the nasal or spheno-palatine foramen, to penetrate the cavity 

 of the nose, where it separates into two branches external and internal, 

 which are distributed to the pituitary membrane. 



5. DENTAL BRANCHES. These are destined to the roots of the upper 

 teeth, and proceed from the superior maxillary nerve during its inter- 

 maxillary course ; some even arise before the entrance t>f that nerve into the 

 bony conduit, which it passes through to reach the face. These latter, 

 analogous to the posterior dental nerve of Man, enter the canal with the 



it branch, and throw their divisions into the roots of the last molar 

 tooth, and sometimes also into the second lost. One portion of them 

 plunges directly into the maxillary protuberance, to bo expended in the 

 mucous membrane lining that protuberance, after furnishing some fila- 

 ments to the periosteum. 



iig the dental branches given off from the maxillary nerve during 

 its interosseous course, some pass to the molars, and the canine and 



incisor teeth. The lir>t, or /////// <l ntnl nerves, separate in groups from 

 the maxillary trunk on its passage above the roots of tho griiuling-te: th ; 

 [tenctrate these roots after a brief forward course, and give some thin 

 iilaim -nts to the membrane lining the maxillary sinuses. 



The second are only at first a single branch the a nful nerve, 



which rises from the maxillary trunk shortly before it leaves its liony canal. 



; a somewhat long track in tho substance of the maxillary bones, tin's 



branch becomes expended in famishing the ramusciil s i'. >r the canine 



tooth and the incisors ; it is always accompanied by a very slender an 



6. INFRA-ORBITAL ou TKI-.MINAL HUAMIIKS OF TIIK SUPERIOR !\l 



i. \I;Y NKHVK. These minuscules hj.n ad in th. -ide of tho face in a magni- 



