FACIAL. 543 



from the auricular branch of the pneumogastric, and communicates with the deep 

 branch of the auricularis magnus ; as it ascends between the meatus and niastoid 

 process it divides into two branches. The auricular branch supplies the Retra- 

 hens aurem, and the integument at the back part of the auricle. The occipital 

 branch, the larger, passes backwards along the superior curved line of the occi- 

 pital bone, and supplies the occipital portion of the Occipito-frontalis and the 

 integument. 



The Stylo-hyoid is a long slender branch, which passes inwards, entering the 

 Stylo-hyoid muscle about its middle ; it communicates with the sympathetic fila- 

 ments on the external carotid artery. 



The Digastric branch usually arises by a common trunk with the preceding ; it 

 divides into several filaments, which supply the posterior belly of the Digastric ; 

 one of these perforates that muscle to join the glosso-pharyngeal nerve. 



The Temporo-facial, the larger of the two terminal branches, passes upwards 

 and forwards through the parotid gland, crosses the neck of the condyle of the 

 jaw, being connected in this situation with the auriculo-temporal branch of the 

 inferior maxillary nerve, and divides into branches, which are distributed over 

 the temple and upper part of the face ; these may be divided into three sets, 

 temporal, malar, and infra-orbital. 



The temporal branches cross the zygoma to the temporal region, supplying 

 the Attrahens aurem and the integument, and join with the temporal branch of 

 the superior maxillary, and with the auriculo-temporal branch of the inferior 

 maxillary. The more anterior branches supply the frontal portion of the Occipito- 

 frontalis, and the Orbicularis palpebrarum muscle, joining with the supra-orbital 

 branch of the ophthalmic. 



The malar branches pass across the malar bone to the outer angle of the orbit, 

 where they supply the Orbicularis and Corrugator supercilii muscles, joining with 

 filaments from the lachrymal and supra-orbital nerves ; others supply the lower 

 eyelid, joining with filaments of the malar branches of the superior maxillary nerve. 



The infra-orbital, of larger size than the rest, pass horizontally forwards to be 

 distributed between the lower margin of the orbit and the mouth. The superficial 

 branches run beneath the skin and above the superficial muscles of the face, 

 which they supply, being distributed to the integument and hair follicles ; some 

 supply the lower eyelid and Pyrarnidalis nasi, joining, at the inner angle of the 

 orbit, with the infra-trochlear and nasal branches of the ophthalmic. The deep 

 branches pass beneath the Levator labii superioris, supply it and the Levator 

 anguli oris, and form a plexus (infra-orbital) by joining with the infra-orbital 

 branch of the superior maxillary nerve. 



The Cervico-facial division of the facial nerve passes obliquely downwards 

 and forwards through the parotid gland, where it is joined by branches from the 

 great auricular nerve ; opposite the angle of the lower jaw it divides into 

 branches, which are distributed on the lower half of the face and upper part of 

 the neck. These may be divided into three sets : buccal, supra-maxillary, and 

 infra-maxillary. 



The buccal branches cross the Masseter muscle, join the infra-orbital branches 

 of the temporo-facial division of the nerve, and with filaments of the buccal 

 branch of the inferior maxillary nerve. They supply the Buccinator and Orbi- 

 cularis oris. 



The supra-maxillary branches pass forwards beneath the Platysma and De- 

 pressor anguli oris, supplying the muscles and the integument of the lip and chin, 

 anastomosing with the mental branch of the inferior dental nerve. 



The infra-maxillary branches run forward beneath the Platysma, and form a 

 series of arches across the side of the neck over the supra-hyoid region. One of 

 these branches descends vertically to join with the superficial cervical nerve from 

 the cervical plexus ; others supply the Platysma and Levator labii inferioris. 



