📌 Introduction
Adrenergic drugs act on the sympathetic nervous system and stimulate alpha and beta adrenergic receptors. These drugs are widely used in asthma, shock, cardiac arrest, hypertension, and nasal congestion. Adrenergic drugs are an important topic for GPAT, DSSSB, PCI, and other pharmacy examinations.
📝 MCQs
1. Adrenergic drugs are also known as:
A) Parasympathomimetics
B) Sympathomimetics
C) Anticholinergics
D) Sedatives
✔ Answer: B
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2. Natural neurotransmitter for adrenergic receptors:
A) Acetylcholine
B) Dopamine
C) Adrenaline
D) Serotonin
✔ Answer: C
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3. α1 receptor stimulation causes:
A) Bronchodilation
B) Vasoconstriction
C) Bradycardia
D) Sedation
✔ Answer: B
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4. β1 receptors are mainly present in:
A) Stomach
B) Kidney and heart
C) Skin
D) Liver
✔ Answer: B
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5. β2 receptor stimulation causes:
A) Bronchoconstriction
B) Bronchodilation
C) Vasoconstriction
D) Sedation
✔ Answer: B
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6. Salbutamol is a:
A) α1 agonist
B) β1 agonist
C) β2 agonist
D) α2 agonist
✔ Answer: C
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7. Adrenaline acts on:
A) Only α receptors
B) Only β receptors
C) Both α and β receptors
D) Dopamine receptors
✔ Answer: C
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8. Clonidine is a selective:
A) α1 agonist
B) α2 agonist
C) β1 agonist
D) β2 agonist
✔ Answer: B
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9. Dobutamine mainly stimulates:
A) β1 receptors
B) β2 receptors
C) α2 receptors
D) Muscarinic receptors
✔ Answer: A
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10. Phenylephrine is mainly used as:
A) Bronchodilator
B) Nasal decongestant
C) Antidepressant
D) Sedative
✔ Answer: B
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11. Which drug is used in anaphylactic shock?
A) Atropine
B) Adrenaline
C) Aspirin
D) Insulin
✔ Answer: B
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12. Noradrenaline mainly acts on:
A) β2 receptors
B) α receptors
C) Dopamine receptors
D) Histamine receptors
✔ Answer: B
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13. Adrenergic drugs mimic:
A) Parasympathetic activity
B) Sympathetic activity
C) CNS depression
D) Skeletal muscle paralysis
✔ Answer: B
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14. Which drug is mixed acting?
A) Salbutamol
B) Clonidine
C) Ephedrine
D) Dobutamine
✔ Answer: C
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15. Indirect acting adrenergic drug:
A) Adrenaline
B) Amphetamine
C) Salbutamol
D) Phenylephrine
✔ Answer: B
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16. β2 agonists are useful in:
A) Asthma
B) Diabetes
C) Ulcer
D) Kidney stones
✔ Answer: A
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17. Common cardiovascular side effect:
A) Bradycardia
B) Tachycardia
C) Hypoglycemia
D) Sedation
✔ Answer: B
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18. Adrenergic drugs may cause:
A) Tremors
B) Sedation
C) Hearing loss
D) Constipation only
✔ Answer: A
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19. α2 receptor activation decreases:
A) Norepinephrine release
B) Heart rate only
C) Blood glucose
D) Bronchodilation
✔ Answer: A
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20. Which receptor increases cardiac output?
A) β1 receptor
B) α2 receptor
C) β3 receptor
D) Muscarinic receptor
✔ Answer: A
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21. β3 receptors are involved in:
A) Bronchodilation
B) Lipolysis
C) Vision
D) Digestion
✔ Answer: B
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22. Which drug is commonly used for bronchodilation?
A) Salbutamol
B) Phenylephrine
C) Clonidine
D) Aspirin
✔ Answer: A
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23. Adrenergic drugs prepare the body for:
A) Digestion
B) Rest and sleep
C) Fight or flight response
D) Muscle paralysis
✔ Answer: C
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24. Common CNS effect of adrenergic drugs:
A) Anxiety
B) Sedation
C) Coma
D) Memory loss
✔ Answer: A
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25. Which receptor causes pupil dilation?
A) α1 receptor
B) β2 receptor
C) β3 receptor
D) Nicotinic receptor
✔ Answer: A
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26. Dobutamine is mainly used in:
A) Heart failure
B) Ulcer
C) Migraine
D) Diabetes
✔ Answer: A
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27. Adrenergic drugs may increase:
A) Blood glucose
B) Sleep
C) Digestion
D) Salivation
✔ Answer: A
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28. Which condition requires cautious use of adrenergic drugs?
A) Hypertension
B) Healthy adults
C) Mild fever
D) Common cold
✔ Answer: A
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29. Which receptor is responsible for bronchodilation?
A) β2 receptor
B) α1 receptor
C) α2 receptor
D) β3 receptor
✔ Answer: A
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30. Main action of adrenergic drugs:
A) Stimulate sympathetic nervous system
B) Stimulate parasympathetic nervous system
C) Cause sedation
D) Reduce nerve transmission
✔ Answer: A
🎯 Conclusion
These MCQs help in quick revision of adrenergic drugs for GPAT, DSSSB, PCI, and other pharmacy exams.
👉 Read full notes here: https://pharmacymcq.in/adrenergic-drugs-classification-mechanism-uses/