What is the primary effect of alpha-1 agonism?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the Vasopressors and Inotropes Test. Engage with multiple choice questions, each offering hints and explanations. Get equipped to excel in your exam!

Multiple Choice

What is the primary effect of alpha-1 agonism?

Explanation:
Activation of alpha-1 receptors on vascular smooth muscle causes contraction, leading to vasoconstriction. This constricts blood vessels, increases systemic vascular resistance, and raises blood pressure. The higher pressure can trigger a reflex slowing of the heart, but the direct, primary effect of alpha-1 agonism is narrowing of vessels, not a decrease in heart rate. Bronchodilation is mediated by beta-2 receptors in the airways, and a direct decrease in heart rate is not the primary action of alpha-1 stimulation. So the main effect is vasoconstriction.

Activation of alpha-1 receptors on vascular smooth muscle causes contraction, leading to vasoconstriction. This constricts blood vessels, increases systemic vascular resistance, and raises blood pressure. The higher pressure can trigger a reflex slowing of the heart, but the direct, primary effect of alpha-1 agonism is narrowing of vessels, not a decrease in heart rate. Bronchodilation is mediated by beta-2 receptors in the airways, and a direct decrease in heart rate is not the primary action of alpha-1 stimulation. So the main effect is vasoconstriction.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy