Question

Why are gray matter and white matter contained in human nervous system named so ?

Answer 1

WHITE NEURON:

myelinated or medullated or white neuron:
when the axon is enclosed by the white fatty myelin cover, it is called myelinated or medullated or white neuron. This form the white matter of our brain.

GREY NEURON:

non-myelinated or non-medullated or grey neuron:
this neuron is not enclosed by the myelin sheath; so it appears greyish in colour. The axon is covered only by neurilemma and schwann cells. This type of neuron is found in the grey matter of cerebrum.



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