ANTERIOR MARGINAL FASCICULUS 787 



to it, and quite probably the nucleus of the spinal root of the vestibular adds further axones 

 Still other investigations have shown that a part at least of the fasciculus comes from the 

 nucleus fastigius (roof nucleus) of the cerebellum. Since many axones from both Deiters' 

 and Bechterew's nucleus terminate in the nucleus fastigius, the ventral vestibulo-spinal fasciculus 



Fig. 620.— Diagram of Spinal Cord Illustrating the Two Chief Varieties of Spino- 

 CEREBRAL AND Cerebro-spinal Neurone Chains. The Ventral tecto-spinal (sulco- 

 marginal) fasciculus, fibres descending from the superior quadrigeminate bodies is not 

 filled in. ' 



Somsesthetic area of cerebral cortex 



Hypothalamic 

 nucleus 



Thalamo-spinal tract — 



Decussation of 

 lemnisci 



Decussation of 

 pyramids 



Cervical region of 

 spinal cord 



Ventral cerebro-spinal 

 fasciculus 



Optic thalamus 



1 ^-» Superior quadrigeminate body 



,^ Inferior quadrigeminate body 



f- Nucleus of fasciculus cuneatus 



r Nucleus of fasciculus gracilis 



! x-* Spino-thalamic and spino-mesencephalic paths 



_. Fasciculus cuneatus 

 Posterior (dorsal) root 



Spinal ganglion 



Lumbar region of 

 spinal cord 



SkL^oUhTsoinarPnrH*'°Tr*? ^'^""i*^" ^"^L" connections for equibbration to the grey sub- 

 cSd its ax^e^. tPr^TnlV- The fasciculus is said to extend as far as the sacral region of the 

 ^AA^aL^^ terminating about the cells of the ventral horns The term " ventral "i^ 



m ?he late ISLlf *Tt^^^^ '^tiro^il^e vestibulo-spinal tract describeVab've Is coursing 

 u uie idterai luniculus. It is considered an uncrossed pathway. 



