Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells?
A
Osteocytes
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B
Liver cells
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C
Neurons
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D
Malpighian layer of the skin
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Solution
The correct option is C Neurons Neurons do not regenerate easily. They probably cannot be regenerated, but some biologists have discovered that sometimes nerve cells can regenerate, but take a long time. So this is a big problem for people who injure their nerve cells or nervous system. The damage of nervous system can also cause a person to be paralyzed.