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Anatomy General anatomy 0b58daf5

Which of the following is true for receptor action of the drug

A
An antagonist has both an intrinsic activity and affinity for receptor
B
An antagonist has the affinity but no intrinsic activity for the receptor
C
A paial antagonist has no affinity or intrinsic activity for the receptor
D
Intrinsic action and affinity are not impotant for drug action
High-Yield Explanation
Ref-KDT 6/e p41 Intrinsic activity is a measure of the ability of a drug that is bound to the receptor to generate an activating stimulus and produce a change in cellular activity. Both agonists and antagonists can bind to a receptor.
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