A medication produces its desired effect by binding to a specific receptor and activating it. How should the nurse classify this medication?
Correct answer: A. Receptor agonist
- A. Receptor agonist
- B. Receptor antagonist
- C. Enzyme inhibitor
- D. Drug antagonist
Explanation
An agonist binds to a receptor and activates a response similar to the natural substance. An antagonist binds without activating the receptor and blocks another drug or chemical from acting.
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About Principles of Pharmacology
Pharmacology examines drug sources, names, dosage forms, mechanisms of action, absorption, distribution, metabolism and excretion. Questions cover pharmacokinetics versus pharmacodynamics, therapeutic effects, adverse reactions, contraindications, drug interactions, tolerance, dependence and the safety responsibilities of the nurse.
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