carotid body


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Related to carotid body: aortic body, carotid body tumor

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.
References in periodicals archive ?
Carotid body tumor surgery no matter how small must be considered a high risk surgery.
Carotid artery pseudoaneurysm after excision of carotid body tumour.
The carotid body is highly vascularized with blood perfusion from the carotid artery far more than the local metabolism [6].
The researchers, who conducted the study of rats, said that despite its small size the carotid body has the highest blood flow of any organ in the body.
Carotid body tumors develop on both sides of the neck in the same rate, in both females and males.
(1) overall morbidity in surgical management of carotid body tumor is approximately 3.3%, and mortality is approximately 2.0%.
Immunohistochemical characteristics of canine aortic and carotid body tumors.
Around 80% of paragangliomas are carotid body or jugulotympanic glomus tumors.
(For example, paragangliomas of the adrenal medulla are pheochromocytomas, and paragangliomas of the carotid bifurcation are carotid body tumors.) Lesions may occur in multiples along the extra-adrenal chromaffin cell system; 40%-50% of all patients with an autosomal dominant familial variant will demonstrate multiple lesions.
More carotid body cells survived in the recent experiment on monkeys, Lopez-Barneo says.
The electronic database MEDLINE was searched from January 1982 to July 2014, with the following keywords: peripheral chemoreceptors, carotid body, hypoxia, ventilation, exercise, hipertension and chronic heart failure, by choosing articles with differentaged human subjects, between 16 and 74 years of age.
[10] Other differential diagnosis are Lymphoma, Tuberculosis, carotid body tumor.