612 



CRANIAL NERVES. 



| Cervico-facial 

 I 



( Temporal. 

 fTemporO' facial -J Malar. 



( Infraorbital. 

 On the face *...-! ( Buccal. 



< Supramaxillary. 

 ( Inframaxillary. 



The tympanic branch arises from the nerve opposite the pyramid ; it is a 

 small filament, which supplies the Stapedius and Laxator Tympani muscles. 



The chorda tympani is given off from the facial as it passes vertically down- 

 wards at the back of the tympanum, about a quarter of an inch before its exit 

 from the stylo-mastoid foramen. It ascends from below upwards in a distinct 

 canal, parallel with the aquseductus Fallopii, and enters the cavity of the tym- 

 panum through an opening between the base of the pyramid and the attach- 



Fig. 342. The Nerves of the Scalp, Face, and Side of the Neck. 



Terminations 

 ipra-troeh/far 

 sf Infra - trocMear 

 if Nasal 



ment of the membrana tympani, and becomes invested with mucous membrane. 

 It passes forwards through the cavity of the tympanum, between the handle 

 of the malleus and vertical ramus of the incus, to its anterior inferior angle, 

 and emerges from that cavity through a foramen (the canal of Huguier) at the 

 inner side of the Glaserian fissure. It then descends between the two Pterygoid 

 muscles, and meets the gustatory nerve at an acute angle, after communicating 



