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← Human Body & HealthWhy does a nerve impulse diminish beyond a synapse when neurotransmitter reuptake is highly effective?
A)Sodium channel refractory period prolongation
B)Reduced postsynaptic receptor binding✓
C)Increased action potential propagation speed
D)Elevated calcium influx at terminals
💡 Explanation
A highly effective neurotransmitter reuptake reduces the neurotransmitter concentration in the synaptic cleft; because of this, fewer neurotransmitters are available to bind to postsynaptic receptors, therefore, decreasing the likelihood of postsynaptic depolarization, rather than other processes that increase signal strength.
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