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← Human Body & HealthWhich process impedes neuronal signal transmission when gap junctions narrow?
A)Increased electrical resistance✓
B)Enhanced neurotransmitter signaling
C)Improved action potential propagation
D)Heightened synaptic sensitization
💡 Explanation
Increased electrical resistance impedes signaling because gap junctions' narrowing increases resistance to ion flow during an action potential by reducing available area for ion passage. Therefore, signal transmission slows rather than enhances because of elevated resistance, and reduced flow.
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