After lower neuron motor denervation caused by poliomyelitis, how does recovery of some muscle strength occur?
A. Cell division of surviving motor neurons produces new motor neurons.
B. Loss of interneuronal inhibition causes hyperreflexia.
C. Axonal sprouting of surviving neurons innervates muscle fibers.
D. Both A and B
E. A, B, and C
ANS: C
Rationale: Post-polio, some muscle strength recovers when surviving neurons innervate muscle fibers. Hyperreflexia and neural cell division do not contribute to the recovery of strength.
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