Multiple Choice
A pure opioid receptor antagonist:
A) cannot counteract an agonist for opioid receptors.
B) binds to all opioid receptors but only fails to activate one type of opioid receptor.
C) binds to but does not activate opioid receptors.
D) is unable to cross the blood-brain barrier.
Correct Answer:

Verified
Correct Answer:
Verified
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