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Questions and Answers
Which drug is an example of a β receptor agonist?
Which drug is an example of a β receptor agonist?
- Hydrocodone
- Adrenaline
- Salbutamol (correct)
- Antagonist
What is the primary function of an agonist in pharmacology?
What is the primary function of an agonist in pharmacology?
- To increase receptor affinity without a response
- To block receptor activity
- To produce a physiological effect similar to a natural signal (correct)
- To reduce the efficacy of physiological signals
Which of the following is true about agonists?
Which of the following is true about agonists?
- Agonists bind to receptors and do not form a complex
- Agonists exhibit both full affinity and full efficacy (correct)
- Agonists only activate receptors at a high concentration
- Agonists have full affinity but no efficacy
What happens when an agonist binds to a receptor?
What happens when an agonist binds to a receptor?
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Which of the following statements about adrenaline is correct?
Which of the following statements about adrenaline is correct?
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Study Notes
Agonist
- An agonist is a drug that binds to a receptor and produces a pharmacological effect or cellular response similar to a physiological signal.
- The agonist binds to the receptor to form a complex, denoted as D + R → DR (complex), which then triggers the desired effects.
- Agonists possess full affinity to the receptor and full efficacy in producing the desired response.
- Examples of agonists include:
- Salbutamol, which acts as a β receptor agonist
- Adrenaline, which acts as both an α and β receptor agonist
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