THE HEAD, ANTERIOR. 61 



The branches of the temporofacial division of the facial nerve are the 

 temporal, malar, and infra-orbital. For these see below. 



Two branches of the cervicofacial division are found upon the face ; these 

 are the buccal and the suprarnaxillary . These structures are to be care- 

 fully dissected out. 



To find the branches of the facial nerve look for them in the region 

 indicated by their names ; it is usually best to begin with the infra-orbital, and 

 after one has been found to trace it forward to its distribution and backward 

 to its source. In tracing any nerve of the facial backward other branches 

 will be found and the dissection carried on step by step until all the branches 

 are cleaned. 



The Facial Nerve. Figs. 2, 3, 10, n, and 14. 



This leaves the skull by the stylomastoid foramen, gives 

 off small branches (posterior auricular, nerve to the pos- 

 terior belly of the digastric, and the nerve to the stylo- 

 hyoid muscle), then divides into the temporofacial and 

 the cervicofacial trunks. 



The temper o facial gives off the temporal which passes 

 upward through the parotid in front of the temporal artery, 

 where it divides into several branches, to the temporal 

 region ; it communicates with the auriculo-temporal nerve 

 behind the temporal artery ; the malar branch runs upward 

 and forward over the malar bone ; the infra-orbital branch 

 extends forward between the zygoma and Stenson's duct, 

 then under the zygomaticus major and minor to supply the 

 superior labial muscles and enter into a plexus with the 

 infra-orbital of the fifth. See page 151. 



The cervicofacial division gives off the buccal to the 

 buccinator (the real motor supply) ; the supramaxillary 

 above, and the inframaxillary below the lower jaw, the 

 former supplying the inferior labial muscles and communi- 

 cating with the mental nerve, the latter supplying the 

 platysma and joining with the superficial cervical nerve. 



Besides these communications mentioned the branches 

 of both divisions communicate with the branch above and 



