The Chief Fibre Systems of the Cerebro-Spinal Axis


In the preceding chapters the principal tracts of nerve fibres have been studied in the separate portions of the brain and spinal cord. The results of these observations may now be combined and the various tract systems traced in their entirety.

As already indicated the fibres of the cerebro-spinal axis may be classified in three groups:

I. Projection fibres of the cerebro-spinal axis
II. Association fibres of the cerebro-spinal axis
III. Commissural fibres of the cerebro-spinal axis