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← Human Body & HealthIf a construction worker continuously uses a jackhammer without padded gloves, which consequence affecting touch sensation is most likely?
A)Increased two-point discrimination threshold
B)Reduced Pacinian corpuscle firing rate✓
C)Heightened Merkel cell sensitivity
D)Enhanced Ruffini ending adaptation speed
💡 Explanation
Repeated vibration exposure damages Pacinian corpuscles, leading to a decrease in their sensitivity and firing rate; because these receptors are responsible for sensing deep pressure and high-frequency vibration, their reduced activity diminishes touch sensitivity. Therefore, reduced Pacinian corpuscle firing rate is most likely, rather than heightened sensitivity or altered adaptation in other receptor types.
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