ANATOMY IX A NUTSHELL. 



397 



which gives off three branches, (1) palpebral, (2) nasal, and (3) labial. 

 While in the sphenomaxillary fossa it is in relation with the infraorbital artery 

 which accompanies it on its course to the face. The branches of distribution are: 

 (1) those given off in the cranium; (2) those given off in the spheno-maxillarv 

 fossa; (3) those given off in the infraorbital canal: and (4) those given off on the 

 face. 



Those in the cranium are one or two meningeal branches which unite with 

 the recurrent branch of the inferior maxillary division of the fifth and also with 

 the sympathetic nerve around the meningeal artery which accompanies it to 

 the dura mater. 



PLATE CCXII. 



LEVATOR PALPEBRAE 



RECTUS SUPERIOR; 



RECTUS INFERIOR 

 RECTUS INTERNUS. 



INFERIOR OBLIQUE, 



The Third Cranial or Motor Oculi Nerve. 



In the spheno-maxillarv fossa are, 1. Orbital or temporo-nialar branch 

 which passes upward and forward to enter the spheno-maxillarv fissure where 

 it divides into temporal and malar branches. 



The temporal branch passes upward in a groove in the outer wall of the 

 orbit where it receives a branch from the lachrymal before it traverses the 

 Bpheno-malar foramen to enter the temporal fossa. It turns round the anterior 

 border of the temporal fascia, then running forward and outward to pierce its 

 fascia about an inch above the zygoma to anastomose with the seventh and 

 auiiculo-teniporal of the inferior maxillary division of the fifth, and supplies 

 the skin of the anterior part of the temporal region. 



The malar branch (subcutaneous mala?) supplies the skin on the promi- 

 nence of the cluck after passing along the external inferior angle of the orbit 

 through the foramen in the malar bone where it perforates the Orbicularis 

 palpebrarum muscle. 



2. The spheno-palatine branches are two in number and descend to the 

 Bpheno-palatine or Meckel's ganglion but do not end there, for most of the fibers 

 pass into the palatine nerves. 



