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Patho Exam 2 Study Questions from
Lehne's Pharmacology - UST ABSN
Cohort 5 Questions and Correct
Answers/ Latest Update / Already
Graded
CH12 1.
The nurse knows that which drug acts by decreasing axonal
conduction?
A. Lidocaine [Xylocaine], a local anesthetic
B. Citalopram [Celexa], an antidepressant
C. Morphine [Duramorph], a pain reliever
D. Halothane [Fluothane], a general anesthetic
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Ans: A. Lidocaine [Xylocaine], a local anesthetic- Correct
Local anesthetics are neuropharmacologic agents that act by
decreasing axonal conduction. Most neuropharmacologic agents act by
altering synaptic transmission. Only a few alter axonal conduction. Drugs
that alter synaptic transmission can produce effects that are much more
selective than those produced by drugs that alter axonal conduction.
CH12 2.
The nurse is administering diphenhydramine [Benadryl], a
neuropharmacologic agent that works by doing what?
A. Preventing mast cells from releasing histamine
B. Preventing axonal conduction
C. Binding to histamine receptors, preventing receptor activation
D. Acting as an agonist to H1 histamine receptors
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Ans: C. Binding to histamine receptors, preventing receptor activation
Correct
Drugs that bind to receptors and prevent their activation include
naloxone (used to treat overdose with morphine-like drugs), antihistamines
(used to treat allergic disorders), and propranolol (used to treat
hypertension, angina pectoris, and cardiac dysrhythmias).
CH12 3. Which phrase should the nurse use to best describe
activation of a receptor?
A. An effect that causes the physiologic process to speed up
B. An effect that mimics the natural neurotransmitter for that
receptor
C. An effect that improves the function of the receptor
D. An effect that causes the receptor to be more sensitive
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Ans: B. An effect that mimics the natural neurotransmitter for that
receptor Correct
Receptor activation is an effect on receptor function equivalent to that
produced by the natural neurotransmitter at a particular synapse.
Activation of a receptor may slow down or speed up the process,
depending on the function of that particular receptor. Activation does
not have to do with improving receptor function or sensitivity.
CH12 4. The nurse knows that the advantage of patients having
multiple types of receptors to regulate bodily functions is what?
A. Improved maximal efficacy
B. Reduction of side effects and toxicity
C. Higher degree of selectivity
D. Lower therapeutic index
Patho Exam 2 Study Questions from
Lehne's Pharmacology - UST ABSN
Cohort 5 Questions and Correct
Answers/ Latest Update / Already
Graded
CH12 1.
The nurse knows that which drug acts by decreasing axonal
conduction?
A. Lidocaine [Xylocaine], a local anesthetic
B. Citalopram [Celexa], an antidepressant
C. Morphine [Duramorph], a pain reliever
D. Halothane [Fluothane], a general anesthetic
,2 | Page
Ans: A. Lidocaine [Xylocaine], a local anesthetic- Correct
Local anesthetics are neuropharmacologic agents that act by
decreasing axonal conduction. Most neuropharmacologic agents act by
altering synaptic transmission. Only a few alter axonal conduction. Drugs
that alter synaptic transmission can produce effects that are much more
selective than those produced by drugs that alter axonal conduction.
CH12 2.
The nurse is administering diphenhydramine [Benadryl], a
neuropharmacologic agent that works by doing what?
A. Preventing mast cells from releasing histamine
B. Preventing axonal conduction
C. Binding to histamine receptors, preventing receptor activation
D. Acting as an agonist to H1 histamine receptors
,3 | Page
Ans: C. Binding to histamine receptors, preventing receptor activation
Correct
Drugs that bind to receptors and prevent their activation include
naloxone (used to treat overdose with morphine-like drugs), antihistamines
(used to treat allergic disorders), and propranolol (used to treat
hypertension, angina pectoris, and cardiac dysrhythmias).
CH12 3. Which phrase should the nurse use to best describe
activation of a receptor?
A. An effect that causes the physiologic process to speed up
B. An effect that mimics the natural neurotransmitter for that
receptor
C. An effect that improves the function of the receptor
D. An effect that causes the receptor to be more sensitive
, 4 | Page
Ans: B. An effect that mimics the natural neurotransmitter for that
receptor Correct
Receptor activation is an effect on receptor function equivalent to that
produced by the natural neurotransmitter at a particular synapse.
Activation of a receptor may slow down or speed up the process,
depending on the function of that particular receptor. Activation does
not have to do with improving receptor function or sensitivity.
CH12 4. The nurse knows that the advantage of patients having
multiple types of receptors to regulate bodily functions is what?
A. Improved maximal efficacy
B. Reduction of side effects and toxicity
C. Higher degree of selectivity
D. Lower therapeutic index
