Where are baroreceptors located that participate in the reflex regulating blood pressure?

Prepare for the Anatomy and Physiology II Milestone 1 Test with engaging questions, in-depth explanations, and focused study resources. Start your journey to excel in your exam!

Multiple Choice

Where are baroreceptors located that participate in the reflex regulating blood pressure?

Baroreceptors sense changes in arterial wall stretch to help regulate mean arterial pressure. They are located in the carotid sinus and the aortic arch. When blood pressure rises, these receptors fire more rapidly and signal the brainstem to decrease heart rate and dilate blood vessels, lowering BP. If BP falls, firing slows, increasing sympathetic output to raise BP. The carotid bodies are chemoreceptors for blood gases, not BP sensing; atrial volume receptors monitor venous return for other reflexes; myocardial nociceptors don’t regulate the baroreflex. So the correct location is the carotid sinus and aortic arch.

Baroreceptors sense changes in arterial wall stretch to help regulate mean arterial pressure. They are located in the carotid sinus and the aortic arch. When blood pressure rises, these receptors fire more rapidly and signal the brainstem to decrease heart rate and dilate blood vessels, lowering BP. If BP falls, firing slows, increasing sympathetic output to raise BP. The carotid bodies are chemoreceptors for blood gases, not BP sensing; atrial volume receptors monitor venous return for other reflexes; myocardial nociceptors don’t regulate the baroreflex. So the correct location is the carotid sinus and aortic arch.

More practice questions