Baroreceptor Definition

A sensory nerve ending that is stimulated by changes in pressure, especially one in the walls of blood vessels such as the carotid sinus.

A nerve ending sensitive to pressure: in the circulatory system they help regulate the dilation of blood vessels by reacting to blood pressure.

A sensory nerve ending in the walls of the auricles of the heart, vena cava, carotid sinus, and aortic arch, sensitive to stretching of the wall due to increased pressure from within, and functioning as the receptor of reflex mechanisms that tend to reduce that pressure.

(anatomy) A nerve ending that is sensitive to changes in blood pressure.