112 EQUINE ANATOMY. 



to the teeth of the superior jaw. Termmal branches : 

 The suborbital to the skin and muscles of the nostrils 

 and upper lip. 



c. Inferior maxillary. — Course : leaving the cra- 

 nium, it passes inside the temporo-maxillary joint, runs 

 forwards and downwards towards the maxillo-dental 

 canal, through which it passes and comes out at the 

 mental foramen and terminates in the mental nerves. 

 Collateral branches : 1 — the masseterine, to the mas- 

 seter muscle after giving off the posterior deep and 

 middle deep temporal ; 2 — the buccal, for the lateral 

 face of the cheek after furnisliing the anterior deep 

 temporal ; 3 — the nerve of the internal pterygoid 

 muscle ; 4 — the superficial temporal or sub-zjgomatic, 

 which anastamoses with the facial ; 5 — the lingual, to 

 the tongue ; 6 — the nerve of the mylo-hyoideus mus- 

 cle ; 7 — dental branches to the teeth of the inferior 

 jaw. Terminal branches to the inferior lip united 

 with a branch of the facial nerve. 



6. External oculo-motor. — Origin : on the rachi- 

 dian bulb behind the annular protuberance. Course : 

 runs through the sphenoidal canal to the orbit, ramify- 

 ing in the external rectus of the eye. 



7. Facial. — Motor at its origin, it becomes mixed 

 afterwards. Origin : from the bulb immediately be- 

 hind the pons Varolii. Course : outwards, takes the 



