Two drugs having opposite action on different receptors is which type of antagonism ?
**Core Concept**
The question is testing the concept of pharmacological antagonism, specifically the type that occurs when two drugs have opposite actions on different receptors. This involves understanding **receptor** interactions and how drugs can modulate these interactions to produce opposing effects.
**Why the Correct Answer is Right**
The correct answer is related to the concept of **functional antagonism**, where two drugs produce opposite effects by acting on different receptors. This type of antagonism does not involve competition at the same receptor site but rather the activation of different pathways that lead to opposing physiological responses.
**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect because it does not accurately describe the scenario of two drugs acting on different receptors to produce opposite effects.
**Option B:** This is also incorrect as it refers to a different mechanism of drug interaction.
**Option C:** Similarly, this option does not fit the description provided in the question.
**Clinical Pearl / High-Yield Fact**
It's crucial to remember that **functional antagonism** is a key concept in pharmacology, allowing for the modulation of physiological responses through the activation of different receptors. This concept is clinically relevant in various therapeutic contexts.
**Correct Answer:** D. Functional Antagonism.