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|The heart, thoracic aorta and other great vessels (aortic body not visible, but aortic arch labeled at center)|
|Latin||Glomus aorticum, corpora paraaortica|
|Gray's||subject #277 1277|
It measures changes in blood pressure and the composition of arterial blood flowing past it, including the partial pressures of oxygen and carbon dioxide and pH. The chemoreceptors responsible for sensing changes in blood gases are called glomus cells.
A paraganglioma is a tumor that may involve the aortic body.
Swelling can also occur.
Some sources equate the "aortic bodies" and "paraaortic bodies", while other sources explicitly distinguish between the two. When a distinction is made, the "aortic bodies" are chemoreceptors which regulate Circulatory system, while the "paraaortic bodies" are the chromaffin cells which manufacture catecholamines.
Cardiovascular system, physiology: cardiovascular physiology
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