Which injury would likely cause the body to permanently lose the ability to perform simple reflexes?

Simple reflexes depend on a reflex pathway that usually runs through the spinal cord, linking sensory nerve cells to motor nerve cells. Damage to nerve cells in the spinal cord could permanently disrupt that pathway. The death of one neuron or damage to a skin nerve may affect only a limited function, while a leg muscle tear does not destroy the spinal reflex pathway.

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