Four healthy people in their twenties got involved in injuries resulting in damage and death of few cells of the following. Which of the cells are least likely to be replaced by new cells?
Correct answer: B. Neurons
- A. Liver cells
- B. Neurons
- C. Malpighian layer of the skin
- D. Osteocytes
Explanation
Neurons are least likely to be replaced because most neurons in the central nervous system are non-dividing (post-mitotic). Once damaged, they have very limited capacity for regeneration, unlike skin cells, liver cells, or blood cells, which can be replaced efficiently.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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