Regrowth of a damaged nerve cell is most likely when
A)damage occurs within the brain.
B)the cell body is destroyed.
C)damage occurs in the spinal cord.
D)an accidentally severed toe is sewn back on.

Question

Quizplus · Accepted Answer

Nerve cells (neurons) have a limited ability to regrow or regenerate, especially in the central nervous system (the brain and spinal cord), making options A and C unlikely. If the cell body of a neuron is destroyed (option B), the neuron cannot survive or regenerate because the cell body contains the nucleus and essential organelles for the cell's function and repair mechanisms. Peripheral nerves, such as those that might be damaged in an accidentally severed toe, have a better chance of regrowing if the damage is properly addressed, such as by sewing the toe back on, aligning the nerves, and providing the right conditions for nerve regeneration.

Regrowth of a Damaged Nerve Cell Is Most Likely When