330 



MR. BELL ON THE NERVES OF THE FACE. 



2. Massetericus. 



3. Buccinalis labialis. 



4. Pteryg-oideus. 



5. Mylo-hyoideus. 



F. Division which joins the portio dura. 



G. Mandibulo-labralis. 

 H. Gustatory nerve. 



I. The chorda tympani. 



Fig. 2. This figure represents the ganglion on one of the spinal nerves, to 

 show its resemblance to the ganglion of the fifth nerve in every particular. 



A. The posterior or sensitive root of the nerve. 



B. The ganglion formed upon the posterior root. 



C. The anterior or motor root of the nerve ; this arises in minute branches 

 which join to form the larger subdivisions, whilst the posterior root is composed 

 of simple and abrupt portions. This division joins the sensitive division beyond 

 the ganglion exactly in the same manner that the motor portion of the fifth 

 joins the lower maxillaiy nerve. 



Fig. 3. Represents one of the ganglions of the sympathetic nerve to show 

 how different it is from those on the symmetrical system of nerves. In fig. 1 

 and 2 the nerve on entering the ganglion and escaping from it, is separated 

 into branches in a manner very different from the mode in which the sympa- 

 thetic nerve joins or forms its ganglions*. 



• Authors who have treated of the anatomy of the ganglions, have not distinguished between the 

 two classes of ganglions as belonging to the sensitive and sympathetic systems of nerves. 



