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← Human Body & HealthIf a pharmaceutical company develops a highly selective antagonist for the neurokinin-1 (NK1) receptor in the dorsal horn, which consequence follows regarding pain perception?
A)Increased inflammatory response locally
B)Reduced transmission of nociceptive signals✓
C)Enhanced peripheral nerve sensitization
D)Increased activity in A-beta fibers
💡 Explanation
Blocking the NK1 receptor prevents substance P from binding, which reduces the transmission of pain signals in the spinal cord because substance P is a key neurotransmitter in nociceptive pathways. Therefore, pain perception is diminished, rather than enhanced peripheral sensitization or increased inflammation.
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