receptor on or near the carotid sinus that responds to alterations in blood levels of oxygen, carbon dioxide, and hydrogen ions

A group of receptors, adjacent to the carotid sinus, that are sensitive to changes in the carbon dioxide levels, pH, and oxygen concentrations of arterial blood.

Group of cells containing chemoreceptors close to internal carotid artery that constantly sense the levels of o2, CO2 and pH of arterial blood. See also aortic bodies, chemoreceptors.