204 



LECTURES ON THE CENTRAL NERVOUS SYSTEM. 



132), sends all its fibrils dorsad and toward the middle line, near 

 which they are gathered into a small bundle. This is the 

 nucleus of the facial nerve. The second of the new nuclei lies 

 external to the restiform body. In tin's section we only see 

 fibres passing to it from the dorsal nucleus of the acoustic, 

 which, at this level, is just beginning to appear. But in making 



FIG. 122. 



The most important structures shown by a section through the vicinitjof the origin of 



the acoustic nerve. 



Cent. B. B., Central tegmeutal tract. 



the next sections you will see that we are dealing with a large 

 structure, the ventral formerly the anterior nucleus of the 

 acoustic nerve. You will observe even here how it is wedged 



The enlarge- 



in between the cerebellum and the restiform body. 



ment ventrad of this nucleus on the outer surface of the oblongata 



is called the tuberculum acusticum. 



