ATI RN
ATI Pharmacology Exam 2 Questions
Extract:
Question 1 of 5
The nurse administers a drug that causes vasoconstriction, contracted piloerection muscles, pupil dilation, closure of salivary sphincter, and male sexual emission. What receptor is the drug stimulating?
Correct Answer: D
Rationale: The correct answer is D: Alpha 1-receptors. The drug causing vasoconstriction, piloerection, pupil dilation, closure of salivary sphincter, and male sexual emission indicates stimulation of alpha 1-adrenergic receptors. These receptors are found in various tissues like blood vessels, iris dilator muscle, piloerector muscles, salivary glands, and reproductive organs, leading to the described physiological responses. Beta 1-receptors (choice
A) primarily affect the heart, Beta 2-receptors (choice
B) cause bronchodilation and vasodilation, and Alpha 2-receptors (choice
C) are involved in negative feedback regulation of noradrenaline release.
Therefore, choices A, B, and C are incorrect based on the given drug effects.
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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