The most important baroreceptors involved in the moment-to-moment regulation of blood pressure are located in the:

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The carotid sinus and aortic arch are the most important baroreceptors involved in the moment-to-moment regulation of blood pressure. These receptors are located in the walls of the carotid sinus and aortic arch, and they monitor changes in blood pressure and relay that information to the brainstem through the glossopharyngeal nerve (from the carotid sinus) and vagus nerve (from the aortic arch). The medulla also plays a role in processing this information and coordinating the appropriate response to maintain blood pressure within a normal range.

The Most Important Baroreceptors Involved in the Moment-To-Moment Regulation of Blood