Pharmacology and the Nursing Process by Linda Lane Lilley: Practice Exam

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Ace your pharmacology exams with "Pharmacology and the Nursing Process" Packed with challenging quizzes based on the renowned textbook Pharmacology and the Nursing Process by Linda Lane Lilley (ISBN: 978-0323827973), it's the perfect tool to test your knowledge and prepare for success.

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How do vasodilators work to lower blood pressure?

  1. By blocking adrenergic receptors

  2. By causing relaxation of arteriolar and/or venous smooth muscle

  3. By increasing plasma volume

  4. By blocking calcium channels

The correct answer is: By causing relaxation of arteriolar and/or venous smooth muscle

Vasodilators work by causing relaxation of arteriolar and/or venous smooth muscle, allowing more blood to flow through the blood vessels, which in turn lowers blood pressure. Option A and D are incorrect because they both involve blocking, not relaxing, which is the opposite of what vasodilators do. Option C is also incorrect because increasing plasma volume would actually increase blood pressure, not lower it.

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