870 THE NERVOUS SYSTEM 



(c) Collaterals and descending branches of bifurcation of dorsal root fibres in spinal 



(d) Directly to ventral horn cells of same level of spinal cord. 



(e) Or to same through intermediation of Golgi cell of type II. 



(/) Or to neurones of fasciculi proprii to ventral horn cells of other levels of spinal cord. 



FIG. 646. SCHEME OF ASCENDING CEREBRO-SPINAL CONDUCTION PATHWAYS. 



INTERS AL 



J! Yl'/l- 

 TH ALA MIC 

 NUCLEUS 



MEDIA L 



j.i-: MX incus 



AFFERENT OK 

 '~~- 8EXKORY CHA- 

 XI A L KERVE 



NUCLEI'S HI-' 



LUS (T.V/i.i Tl~x 



OF I-TSKT- 



/, r.s 



CUSEATUS 



-- FASCICULUS GRACILIS 



~"^-_~ SPIRAL GANGLIA 



2. Ventral horn cells of same and opposite side and thence by way of ventral roots and 

 peripheral nerve trunks directly to muscles or indirectly through sympathetic. 



