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← Human Body & HealthWhich communication failure develops after long-term opioid usage?
A)Decreased neurotransmitter receptor upregulation✓
B)Enhanced voltage-gated calcium channel activity
C)Reduced glutamate-induced excitotoxicity
D)Increased gamma-aminobutyric acid inhibition
💡 Explanation
Opioids desensitize neurons through receptor downregulation, diminishing signal transmission effectiveness; therefore, receptor upregulation decreases signal detection sensitivity rather than increasing excitation or inhibition from alternate pathways via glutamate or GABA systems due to neural adaptation.
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