Baroreceptors are sensory receptors stimulated by changes in what parameter?

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Multiple Choice

Baroreceptors are sensory receptors stimulated by changes in what parameter?

Explanation:
Baroreceptors are mechanosensitive sensors that detect how stretched the arterial walls are, which directly reflects arterial blood pressure. They are located in the carotid sinus and aortic arch. When blood pressure rises, the walls stretch more, increasing their firing rate; the brainstem then adjusts autonomic output to lower BP—slowing the heart and dilating vessels. When BP falls, firing decreases, and sympathetic activity increases to raise heart rate, contractility, and vascular tone. In short, baroreceptors respond to changes in arterial blood pressure, not to temperature, pain, or oxygen saturation.

Baroreceptors are mechanosensitive sensors that detect how stretched the arterial walls are, which directly reflects arterial blood pressure. They are located in the carotid sinus and aortic arch. When blood pressure rises, the walls stretch more, increasing their firing rate; the brainstem then adjusts autonomic output to lower BP—slowing the heart and dilating vessels. When BP falls, firing decreases, and sympathetic activity increases to raise heart rate, contractility, and vascular tone. In short, baroreceptors respond to changes in arterial blood pressure, not to temperature, pain, or oxygen saturation.

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