376 



NERYOUS SYSTEM. 



forms its continuation, and joins the sphenopalatine ganglion 



(P- 373)- 



The chorda tympani is given off two or three millimeters 

 before the emergence of the facial at the stylomastoid foramen. 

 It passes into the tympanic cavity, extends across it between 



FIG. 155. SUPERFICIAL NERVES OF THE FACE. 



a, N. facialis; b, branch to digastric; c, N. auricularis posterior; d, branch to 

 inside of ear; e, ventral ramus; _/", dorsal ramus; g. temporal nerve; h, zygomatic 

 nerve; i, nerve to stylohyoid muscle; /, inferior buccal nerve; /C% superior buccal 

 nerve; /, infraorbital branches of fifth nerve; m. lachrymal branches of fifth nerve; 

 n, auriculotemporal branches of fifth nerve. I, M. digastricus; 2, M. stylohyoideus ; 

 3, M. masseter. 



the malleus and incus, passing close against the tensor tympani 

 muscle, and leaves it (by a small cleft, the canal of Huguier) 

 between the bulla and the squamous portion of the temporal. 

 It then passes craniad (Fig. 154, c), ventrad of the root of the 



