A medication is called an antagonist if:

A) it has a higher affinity for the receptor site than the chemical mediator.
B) it stimulates a receptor site to cause the response that that receptor normally causes.
C) it attaches to a receptor site and produces an effect or series of effects.
D) the chemical mediator of a receptor has a higher affinity than the medication.


Answer: A) it has a higher affinity for the receptor site than the chemical mediator.

Nursing

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