DISSECTION OF THE HEAD AND NECK 369 



(ba) Jugular ganglion (ganglion jugular e). 



(bb) Ganglion nodosum (ganglion nodosum) ("knotty" gan- 



glion). 

 Nuclei terminates: 



(a) Nucleus of ala cinerea (nucleus alae cinereae). 



(b) Nucleus of tractus solitarius (nucleus tractus solitarii). 



(c) Commissural nucleus (nucleus commissuralis) (O. T. ganglion 



commissurale). 

 Secondary paths: 



(a) From nuclei terminates through fibrae arcuatae internae to oppo- 



site stratum interolivare lemnisci and thence through lemniscus 

 medialis to [ventro-] lateral nucleus of thalamus. 



(b) From nuclei terminates through lateral bundles of substantia 



reticularis alba of same and of opposite side to [ventro-] lateral 

 nuclei of thalamus. 



(c) From nuclei terminates through medial portion of corpus resti- 



forme to nucleus fastigii and cortex vermis. 



Tertiary path: probably from [ventro-] lateral nucleus of thalamus 

 through capsula interna and corona radiata to central gyri (somaes- 

 thetic area). 



Conduction Paths of Cerebellar Peduncles. 



PATHS OF CORPUS RESTIFORME (0. T. INFERIOR PEDUNCLE). 



(a) Paths of corpus resti forme proper. 



(aa) Cerebellospinal fasciculus (fasciculus cerebellospinalis, or, 



better, fasciculus spinocerebellaris dorsolateralis) (0. T. 

 direct cerebellar tract). 



(ab) External arcuate fibres (fibrae arcuatae externae ) = crossed 



and uncrossed medullated axones from nuclei funiculi 

 cuneati et gracilis. 



(ac) Cerebello-olivary fibres (fibrae cerebelloolivares) , partly as- 



cending, partly descending. 



(ad) Medullated axones from nuclei laterales to cerebellum. These 



paths (aa, ab, ac, and ad] run into the cerebellum to end 

 in the cortex of the vermis; they give off collaterals and 

 some terminals to the nucleus fastigii, nucleus dentatus, 

 nucleus emboliformis, and nucleus globosus as these are 

 passed. 



(b) Paths of medial part of corpus restiforme. 



(ba) Ascending paths, corresponding to secondary paths from the 



nuclei terminates of the Nn. vagus, glossopharyngeus, ves- 

 tibularis, et trigeminus to the nucleus fastigii and cortex 

 vermis. 



(bb) Descending paths from nucleus fastigii to opposite nucleus 



N. vestibularis [Deitersi]. This connects at Deiters' nu- 

 cleus with the path leading to the lateral funiculus of the 

 spinal cord. 



PATHS OF BRACHIUM PONTIS (0. T. MIDDLE CEREBELLAR PEDUNCLE). 



(a) Cerebellopontal paths, from cortex of hemisphaerium cerebelli to 

 nuclei pontis of same and of opposite side. 

 24 



