508 NERVOUS SYSTEM 



eating branch passes between the facial and the pneumogastric, connect- 

 ing these nerves by a double inosculation. 



The five branches above described are given off in the aquaeductus 

 Fallopii. The following branches are given off after the nerve has 

 emerged from the cranial cavity : 



1 . Just after the facial has passed out at the stylo-mastoid foramen, 

 it sends a small communicating branch to the glosso-pharyngeal nerve. 

 This branch is sometimes wanting. 



2. The posterior auricular nerve is given off by the facial a little 

 below the stylo-mastoid foramen. Its superior branch is distributed to the 

 retrahens aurem and the attollens aurem. In its course this nerve re- 

 ceives a communicating branch of considerable size from the cervical 

 plexus by the auricularis magnus. It sends some filaments to the integu- 

 ment. The inferior, or occipital branch, the larger of the two, is dis- 

 tributed to the occipital portion of the occipito-frontalis muscle and to 

 integument. 



3. The digastric branch is given off near the root of the posterior 

 auricular. It is distributed to the posterior belly of the digastric muscle. 

 In its course it anastomoses with filaments from the glosso-pharyngeal. 

 From the plexus formed by this anastomosis, filaments are given off to 

 the digastric and to the stylo-hyoid muscles. 



4. Near the stylo-mastoid foramen a small branch is given off which 

 is distributed exclusively to the stylo-hyoid muscle. 



5. Near the stylo-mastoid foramen, or sometimes a little above it, a 

 long delicate branch is given off, which is not noticed in many works on 

 anatomy. It is described, however, by Hirschfeld, under the name of 

 the lingual branch. It passes behind the stylo-pharyngeal muscle and 

 then by the sides of the pharynx to the base of the tongue. In its course 

 it receives one or two branches from the glosso-pharyngeal nerve, which 

 are nearly as large as the original branch from the facial. As it passes 

 to the base of the tongue it anastomoses again by a number of filaments 

 with the glosso-pharyngeal. It then sends fHaments of distribution to 

 the mucous membrane and finally passes to the stylo-glossus and palato- 

 glossus muscles. 



Having given off these branches, the trunk of the facial passes 

 through the parotid gland, dividing into its two great terminal 

 branches : 



i. The temporo-facial branch, the larger, passes upward and forward 

 to be distributed to the superficial muscles of the upper part of the 

 face ; namely, the attrahens aurem, the frontal portion of the occipito- 

 frontalis, the orbicularis palpebrarum, corrugator supercilii, pyramidalis 

 nasi, levator labii superioris, levator labii superioris alaeque nasi, the 



