Here are 15 MCQs (without answers) based on your uploaded lecture on Adrenergic Drugs:
--Multiple Choice Questions
1. Which neurotransmitter is primarily released from adrenergic neurons?
A) Acetylcholine
B) Norepinephrine
C) Dopamine
D) Serotonin
2. Which of the following is not one of the five steps of neurotransmission at adrenergic
neurons?
A) Synthesis
B) Storage
C) Reuptake
D) Release
3. The two main families of adrenergic receptors are:
A) Alpha and Beta
B) Muscarinic and Nicotinic
C) Dopaminergic and Serotonergic
D) Histaminergic and GABAergic
4. Direct receptor binding is the most common mechanism of:
A) Adrenergic receptor activation
B) Neurotransmitter synthesis
C) Enzyme inhibition
D) Dopamine reuptake
5. Which drug acts by promoting norepinephrine release?
A) Cocaine
B) Ephedrine
C) Tricyclic antidepressants
D) MAO inhibitors
6. Which of the following blocks norepinephrine reuptake?
A) Amphetamines
B) Cocaine
C) Ephedrine
D) Epinephrine
7. Drugs that inhibit monoamine oxidase (MAO) enhance adrenergic receptor activation by:
A) Decreasing storage of NE
B) Increasing NE availability
C) Blocking receptor binding
D) Enhancing enzymatic breakdown
8. Which adrenergic drug class acts directly on adrenergic receptors?
A) Indirect-acting
B) Mixed-acting
C) Direct-acting
D) Enzyme inhibitors
9. Mixed-acting sympathomimetic drugs:
A) Only promote NE release
B) Only directly bind receptors
C) Both release NE and activate receptors
D) Block enzymatic breakdown only
10. Which receptor is primarily responsible for pupillary dilation (mydriasis)?
A) β1
B) β2
C) α1
D) Muscarinic
11. Epinephrine at clinical doses activates which receptors?
A) α1, β1, and β2
B) α2 and β1
C) β2 only
D) β1 only
12. Adrenergic receptors in the heart that mediate positive chronotropic effects are:
A) α1
B) β1
C) β2
D) α2
13. Which of the following is an example of an indirect-acting adrenergic drug?
A) Dobutamine
B) Amphetamines
C) Epinephrine
D) Phenylephrine
14. Which of the following enzymes is inhibited by tricyclic antidepressants to increase NE
action?
A) Monoamine oxidase
B) Catechol-O-methyltransferase
C) Acetylcholinesterase
D) NE reuptake transporters
15. Adrenergic drugs can be lifesaving but require caution because:
A) They act only on one receptor
B) They can be direct, indirect, or mixed in action
C) They are always inhibitory
D) They block parasympathetic activity only
--Do you want me to also prepare a separate answer sheet with only the correct letters (like I did
before for your other requests)?