392 



FACIAL NERVE. 



Fig. 129.* 



the two ptcrygoid muscles. Enclosed in the sheath of the gustatory 

 nerve, it descends to the submaxillary gland, where it unites with 

 the submaxillary ganglion. 



The Communicating branches are filaments which it receives 

 from the glosso-pharyngeal and pneumogastric nerves. 



The Posterior auricular nerve ascends behind the ear, and crosses 

 the mastoid process to the occipito-frontalis muscle ; it gives 

 branches also to the attollens and retrahens muscles of the pinna. 



The Digastric branch 

 supplies the posterior belly 

 of the digastricus muscle. 

 The Stijlo-hyoid branch 

 is distributed to the stylo- 

 hyoid muscle. 



The Temporo-facial 

 gives off a number of 

 branches which are dis- 

 tributed over the temple 

 and upper half of the face, 

 supplying the muscles of 



t r j o 



this region, and commu- 

 nicating with the branches 

 of the auricular, the tem- 

 poro-malar, and the su- 

 pra-orbital nerve. ,The 

 inferior branches, which 

 accompany Stenon's duct, 

 form a plexus with the 

 terminal branches of the 

 infra-orbital nerve. 



The Cervico-facial di- 

 vides into a number of branches that are distributed to the muscles 

 on the lower half of the face, and upper part of the neck. The 

 cervical branches form a plexus with the superficialis colli nerve 

 over the submaxillary gland. 



* The distribution of the facial nerve and the branches of the cervical plexus. 1 . 

 The facial nerve, escaping from the stylo-mastoid foramen, and crossing the ramus of 

 the lower jaw ; the parotid gland has been removed in order to see the nerve more dis- 

 tinctly. 2. The posterior auricular branch ; the digastric and stylo-mastoid filaments 

 arc seen near the origin of this branch. 3. Temporal branches, communicating with 

 (4) the branches of the frontal nerve. 5. Facial branches, communicating with (6) the 

 infra-orbital nerve. 7. Facial branches, communicating with (8) the mental nerve. 9. 

 Cervico-facial branches communicating with (10) the superficialis colli nerve, and 

 forming a plexus (11) over the submaxillary gland. The distribution of the branches 

 of the facial in a radiated direction over the side of the face constitutes the pes anse- 

 rinus. 12. The auricularis magnus nerve, one of the ascending branches of the cer- 

 vical plexus. 13. The occipitalis minor, ascending along the posterior border of the 

 sterno-mastoid muscle. 14. The superficial and deep descending branches of the cer- 

 vical plexus. 15. The spinal accessory nerve, giving off a branch to the external sur- 

 face of the trapezius muscle. 16. The occipitalis major nerve, the posterior branch of 

 the second cervical nerve. 



