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Questions and Answers
Which of the following statements about catecholamines is correct?
Which of the following statements about catecholamines is correct?
- They have poor penetration into the central nervous system (CNS).
- They are highly potent in activating α or β receptors. (correct)
- They have a prolonged duration of action when administered orally.
- They are not readily metabolized by COMT or MAO.
Which of the following compounds is a non-catecholamine?
Which of the following compounds is a non-catecholamine?
- Epinephrine
- Isoproterenol
- Amphetamine (correct)
- Norepinephrine
What is a characteristic of non-catecholamines compared to catecholamines?
What is a characteristic of non-catecholamines compared to catecholamines?
- They are less potent in activating α or β receptors.
- They have poorer penetration into the central nervous system (CNS).
- They have a shorter half-life due to rapid metabolism by COMT.
- They have a longer duration of action due to reduced metabolism by MAO. (correct)
Which of the following statements accurately describes direct-acting adrenergic agonists?
Which of the following statements accurately describes direct-acting adrenergic agonists?
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What is the primary mechanism of action for indirect-acting adrenergic agonists?
What is the primary mechanism of action for indirect-acting adrenergic agonists?
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