How do baroreceptors respond to a sudden rise in blood pressure?

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 $24.99Unlock all

Study for the Aandamp;P Blood Vessels Test. Use detailed quizzes with multiple choice questions and comprehensive explanations. Boost your understanding for your exam day!

Multiple Choice

How do baroreceptors respond to a sudden rise in blood pressure?

Explanation:
When blood pressure rises suddenly, baroreceptors in the carotid sinus and aortic arch are stretched more, so their firing rate increases. That information travels to the brainstem, which responds by increasing parasympathetic (vagal) output to the heart and reducing sympathetic output to the vasculature. The heart slows (reflex bradycardia) and the vessels dilate due to the drop in sympathetic tone, lowering blood pressure back toward normal. This combination—slower heart rate plus vasodilation—best matches the response described.

When blood pressure rises suddenly, baroreceptors in the carotid sinus and aortic arch are stretched more, so their firing rate increases. That information travels to the brainstem, which responds by increasing parasympathetic (vagal) output to the heart and reducing sympathetic output to the vasculature. The heart slows (reflex bradycardia) and the vessels dilate due to the drop in sympathetic tone, lowering blood pressure back toward normal. This combination—slower heart rate plus vasodilation—best matches the response described.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy