Answer:
Explanation:
Damage to the spinal cord rarely it can sometimes heal but its uncertain because the injured nerve cells fail to regenerate. The regrowth of their long nerve fibers is hindered by scar tissue and molecular processes inside the nerves.
Nerve cells don't regenerate because nerve cells(neurons) lack centriole
which are important in mitotic division.
Mitosis is a type of cell division in which cells multiply and become
specialized. During mitosis, centrioles move to the poles and spindle fibers
is formed which helps pull the chromosomes.
Neurons lack these centrioles and therefore regeneration becomes difficult
as a result of failed mitotic division.
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