Grey/White matter
Grey Matter:
Neurons - cell bodies and branching dendrites
Responsible for muscle control, sensory, memory, emotions, speech
Insulated by Glial cells
White Matter
Sheets of nerve fibre tracts
Myelinated axons and Glial cells
Communication and signal relay
Tracts of White Matter
Projection tracts
Relay info from cerebral cortex down to brain stem/spine (corticalspino) or visa versa (spinothalamic)
Association tracts
Relay info from one convolution (gyrus) to another within the same hemisphere
Most abundant
Commissural tracts
Left/right brain communication (corpus callosum)











