carotid-body reflex

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carotid-body reflex

Etymology: Gk, karos + AS, bodig + L, reflectere, to bend back

a normal chemical reflex initiated by a decrease in oxygen concentration in the blood and, to a lesser degree, by increased carbon dioxide and hydrogen ion concentrations that act on chemoreceptors at the bifurcation of the common carotid arteries. The resulting nerve impulses cause the respiratory center in the medulla to increase respiratory activity. See also aortic-body reflex.

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