THE SEVENTH OR FACIAL NERVE. 



743 



The digastric branch usually arises by a common trunk with the Stylo-hyoid 

 branch : 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 stylo-hyoid is a long, slender branch, which passes inward, entering the 

 Stylo-hyoid muscle about its middle. 



The Teraporo-facial, the larger of the two terminal branches, passes upward 

 and forward through the parotid glands, crosses the external carotid artery and 

 temporo-maxillary vein, and passes over 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 are divided into three sets temporal, malar, and 

 infra-orbital. 



Terminations 



of supratrochlear. 



of infratrochlear 



of nasal. 



FIG. 401. The nerves of the scalp, face, and side of the neck. 



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

 Attrahens and Attollens auriculam muscles, and join with the temporal branch of 

 the temporo-malar, a branch of the superior maxillary, and with the aunculo-tcm- 

 poral branch of the inferior maxillary. The more anterior branches supply the 

 frontal portion of the Occipito-frontalis, the Orbicularis palpebrarum and Corruga- 

 tor supercilii muscles, joining with the supra-orbital and lachrymal branches 

 the ophthalmic. 



The malar branches pass across the malar bone to the outer angle c 



