ATI RN
ATI Pharmacology Exam 2 Questions
Extract:
Question 1 of 5
A student ask the pharmacology instructor to explain the action of anticholinergic agents. What would be the instructor's best response?
Correct Answer: B
Rationale: The correct answer is B: They act to block the effects of the parasympathetic nervous system. Anticholinergic agents work by blocking the action of acetylcholine at muscarinic receptors, which are part of the parasympathetic nervous system. This leads to a decrease in parasympathetic activity and results in effects such as decreased salivation, pupillary constriction, and smooth muscle contraction.
Choice A is incorrect because anticholinergic agents do not directly affect norepinephrine levels at the neuromuscular junction.
Choice C is incorrect as anticholinergic agents do not compete with serotonin for muscarinic acetylcholine receptor sites.
Choice D is incorrect because anticholinergic agents primarily block muscarinic receptors, not nicotinic receptors.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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