

in in 



halami and 

 mid- brain 



3-1 



Cord and medulla 



FIG. 31. DIAGRAM OF THE MAIN PATHS OF NERVOUS IMPULSES 

 FROM THE BODY INTO THE BRAIN. 



Three spinal nerve fibres (I, II, III) are shown entering the cord. Each fibre divides 

 into three branches. 



Left : Impulses resulting from general sensation pass up in the cord as shown, entering 

 into and again emerging from the grey matter ; theconnection isdirectly with the thulamua, 



Centre: The paths taken ly impulses coming from the muscles and joints ; the COM 

 nection is with the thalamus, but indirectly through nuclei in the medulla. 



lit : The paths taken by impulses coming from the muscles and joints, nnd entering 

 in the cerebellum, but also ascending to the cortex via the thalamus and returning to the 

 cord via the red nucleus. 



