carotid body

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ca·rot·id bod·y

[TA]
a small epithelioid structure located just above the bifurcation of the common carotid artery on each side. It consists of granular principal cells and nongranular supporting cells, a sinusoidal vascular bed, and a rich network of sensory fibers of the glossopharyngeal nerve. It serves as a chemoreceptor organ responsive to lack of oxygen, excess of carbon dioxide, and increased hydrogen ion concentration.

carotid body

n.
A chemoreceptor that is a body of vascular tissue near the bifurcations of the carotid arteries. It monitors changes in the oxygen content of the blood and helps to control respiratory activity.

ca·rot·id bod·y

(kă-rot'id bod'ē) [TA]
A small epithelioid structure located just above the bifurcation of the common carotid artery on each side. It serves as a chemoreceptor organ responsive to oxygen lack, carbon dioxide excess, and increased hydrogen ion concentration.
Synonym(s): intercarotid body.

carotid body

A chemical receptor, situated at the first branch of each carotid artery, that monitors oxygen levels in the blood and regulates the rate of breathing accordingly.
Carotid bodyclick for a larger image
Fig. 93 Carotid body . Location.

carotid body

an area of gland-like tissue situated near the joining of the external CAROTID ARTERY to the common carotid which acts as a CHEMORECEPTOR (see Fig. 93. When blood-oxygen concentration levels are low and/or the concentration of carbon dioxide is high, the carotid body is stimulated to produce nervous impulses which are transmitted to the respiratory centre in the hindbrain, thus influencing BREATHING rate and, in turn, heart rate.

ca·rot·id bod·y

(kă-rot'id bod'ē) [TA]
Small epithelioid structure located just above the bifurcation of the common carotid artery on each side.