390 NORMAL HISTOLOGY AND ORGANOGRAPHY. 



be seen, that appear to come from the median fissure 

 and sweep around the olive and enter the cerebellum 

 through the restiform body and inferior peduncle. 

 These are called the superficial arcuate fibers, and 

 many of them come from the nerve cells of the olive 

 of both the same and the opposite sides. 



Sections of the Medulla. Cross Sections of the 

 Closed Medulla. These verify the surface markings 



Median 

 raphe. 



Central canal. Funiculus gracilis. 



Nucleus gracilis. 



Funiculus cuneatus. 



Nucleus cuneatus. 

 Spinal root of fifth 



nerve. 

 Sub slant ia gelati- 



nosa Rolando. 

 Deep arcuate fibers. 



Mesial olive. 

 Decussation of fibers. 

 Superficial arcuate. 



Olive nucleus. 



Arcuate nucleus. 

 Anterior Pyramids. 



Fig. 271. Cross section of the closed medulla. 



already described. In the dorsal region is the funiculi 

 gracilis and cuneatus, fiber tracts of the columns 

 of Goll and Burdach. Beneath these are the nuclei 

 of gracilis and cuneatus, nerve cells around which 

 arborize the telodendria of the fibers of the columns 

 of Goll and Burdach. From these nerve cells axones 

 spring that sweep downward and across to the oppo- 

 site side, and in crossing form the sensory decussa* 



