Also found in: Dictionary
Related to carotid bodies: Baroreceptors
, Aortic bodies
carotid bodies small clumps of tissue close to the carotid arteries, containing chemoreceptors that respond rapidly to a fall in oxygen, decrease in pH and/or increase in carbon dioxide in the arterial blood. Via neural connections to the brain stem, they mediate reflex responses (chemoreflexes) including an increase in ventilation, which correct or compensate for these changes. See also hypoxia.