NEUROLOGY 



The superior cerebellar peduncles (brachia conjunctiva), two in number, emerge 

 from the upper and medial part of the white substance of the hemispheres and 

 are placed under cover of the upper part of the cerebellum. They are joined to each 

 other across the middle line by the anterior medullary velum, and can be followed 



a. Ala lobuh centralis 

 <r 



Lingula 



Superior peduncle 



Horizontal 

 sulcus 



TONSII- 



Nodule Fourth ventricle 

 Fia. 704. Sagittal section of the cerebellum, near the junction of the vermis with the hemisphere. (Schafer.) 



Superior peduncle 



Inferior peduncle 



Middle peduncle 



Trigeminal 



nerve 



Inferior peduncle 

 Flo. 705. Dissection showing the projection fibers of the cerebellum. (After E. B. Jamieson.) 



upward as far as the inferior colliculi, under which they disappear. Below, they 

 form the upper lateral boundaries of the fourth ventricle, but as they ascend they 

 converge on the dorsal aspect of the ventricle and thus assist in roofing it in. 



The fibers of the superior peduncle are mainly derived from the cells of the 



