376 NERVOUS 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 
Fic. 155.—SUPERFICIAL NERVES OF THE FACE. 
a, N. facialis; 4, branch to digastric; ¢, N. auricularis posterior; d, branch to 
inside of ear; ¢, ventral ramus; 7, dorsal ramus; g, temporal nerve; 4, zygomatic 
nerve; z, nerve to stylohyoid muscle; /, inferior buccal nerve; 2, superior buccal 
nerve; /, infraorbital branches of fifth nerve; , lachrymal branches of fifth nerve; 
n, auriculotemporal branches of fifth nerve. 1, 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, ¢), ventrad of the root of the 
