FACIAL NEEVE. 



783 



Eamus Stylohyoideus, Eamus Digastricus. Small branches supply the stylo-hyoid 

 and the posterior belly of the digastric, the latter nerve sometimes communicating 

 with the glossopharyngeal. (3) N. Auricularis Posteriori The posterior auricular 

 nerve bends backwards and upwards over the 'anterior border of the mastoid pro- 

 cess along with the posterior auricular artery. It divides into two branches an 

 auricular branch for the posterior auricular muscle and the intrinsic muscles of 

 the auricle, and an occipital branch for the occipital belly of the epicranius muscle. 



Supra-trochlear nerve 



Supra-orbital nerve , 



i-trochlear nerve ,/L 



matico -facial nerve 

 External nasal nerve 



Infra-orbital nerve 



ifra-orbital plexus 

 Lower zygomatic 

 inches of temporo- 

 facial division 



Buccinator nerve ~ 



Mental nerve 



_ Zygomatico-temporal 

 nerve 



Auriculo-temporal nerve 



Temporal \ branches 



Posterior auricular nerve 

 ~~ Facial nerve 

 Cervico-facial division 



- ( Branches to stylo-hyoid 

 1 and digastric 

 ^(posterior belly) 



"" Buccal branch 

 Marginal mandibular branch 

 Cervical branch 





657. THE DISTRIBUTION OF THE TRIGEMINAL AND FACIAL NERVES ON THE FACE. 



The posterior auricular nerve, in its course, communicates with the great auricular, 

 . lesser occipital, and auricular branch of the vagus nerves. 



(iv.) In the parotid gland the facial nerve spreads out in an irregular series of 

 : branches (plexus parotideus), indefinitely divided into a temporo-facial and a cervico- 

 ! facial division. Communications occur in the substance of the gland between the 

 main trunks and the great auricular and auriculo-temporal nerves. 



The temporo-facial division gives off two series of subordinate branches which 

 radiate forwards and upwards from the parotid gland. 



1. Kami Temporales. The temporal branches are of large size, and, sweeping 

 3ut of the parotid gland over the zygomatic arch, are distributed to the orbicularis 

 )culi, frontalis, corrugator supercilii, auriculares anterior and superior. The temporal 

 pranches communicate in their course with the auriculo-temporal, zygomatico- 

 ' temporal, lacrimal, and supra-orbital branches of the trigeminal nerve. 



!. Kami Zygomatici. The upper zygomatic branches are small, and sometimes 

 ire inseparable from the temporal or lower zygomatic nerves. Extending forwards 



