There is no response to a faradic stimulation to muscle tissue in

• A. Partial reaction of degeneration
• B. Full reaction of degeneration
• C. Both A and B
• D. Neither A nor B

Answer: (B)

Testing muscle excitability with faradic stimulation reveals how well the muscle fibers can respond when triggered directly, indicating the level of degeneration or viability of the tissue. If degeneration is partial, some muscle fibers remain viable and will contract, though the response is reduced or imperfect. In contrast, when there is a full reaction of degeneration, the muscle has lost its excitability altogether, so a direct faradic stimulus produces no contraction.

That’s why the absence of any response to faradic stimulation points to a state of full degeneration—the tissue has become non-excitable. A partial reaction would still show some activity, so it wouldn’t result in no response.