252 THE NERVOUS SYSTEM 



lateral portion of the medulla, and are external to the oli- 

 vary bodies. They contain fibers from the columns of .Bur- 

 dach, and contribute largely to the formation of the inferior 

 peduncles of the cerebellum. The restiform bodies, diverg- 

 ing as they ascend, form the lateral boundaries of the in- 

 ferior division of the fourth ventricle. Beneath the olivary 



FIG. 79. Floor of the 4th ventricle and the connections of the 

 cerebellum. 



On the left side the three cerebellar peduncles are cut short; on the right the 

 connections of the superior and inferior peduncles have been preserved, while 

 the middle one has been cut short, i, median groove of the 4th ventricle with 

 the fasciculi teretes; 2, the striae of the auditory nerve on each side emerging 

 from it; 3, inferior peduncle; 4, posterior pyramid and claya, with the calamus 

 scriptorius above it; 5, superior peduncle; 6, fillet to the side of the crura cer- 

 ebri; 8, corpora quadrigemina. (Landois.) 



bodies, and between the anterior pyramids and the restiform 

 bodies, are the lateral fasciculi, or the funiculi of Rolando. 

 They constitute the upward prolongation of all the antero- 

 lateral portion of the cord which does not go to the forma- 

 tion of the auterior pyramids. Their chief importance is in 

 the fact that they contain the centers for respiration. The 

 posterior pyramids are sometimes called the funiculi graciles. 

 They join the restiform bodies and pass to the cerebellum. 



