Which statement accurately describes the action of a drug antagonist?
Understand the Problem
The question is asking for a precise definition of a drug antagonist, particularly its mechanism of action relative to neurotransmitters and receptors. We need to identify which of the provided statements aligns with the established understanding of drug antagonists.
Answer
A drug antagonist binds to a receptor, does not activate it, and blocks other molecules.
A drug antagonist binds to a receptor without activating it and blocks the action of other molecules that might activate the receptor.
Answer for screen readers
A drug antagonist binds to a receptor without activating it and blocks the action of other molecules that might activate the receptor.
More Information
Antagonists are crucial in medicine as they can inhibit unwanted biological responses, such as nerve signals or muscle contractions, by blocking receptors.
Tips
A common mistake is confusing antagonists with agonists. Agonists activate receptors to produce a biological response, whereas antagonists block these responses.
Sources
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