Everything about Aortic Body totally explained
In the human heart, the
aortic body is one of several small clusters of
chemoreceptors,
baroreceptors, and supporting cells located along the
aortic arch.
Function
It measures changes in blood pressure and the composition of arterial blood flowing past it, including the partial pressures of
oxygen and
carbon dioxide but not
pH. The chemoreceptors responsible for sensing changes in blood gases are called
glomus cells.
It gives feedback to the
medulla oblongata via the afferent branches of the
vagus nerve (X). The medulla, in turn, regulates breathing and blood pressure.
Disorders
A
paraganglioma is a tumor that may involve the aortic body.
Swelling can also occur.
Nomenclature
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
circulation, while the "paraaortic bodies" are the
chromaffin cells which manufacture
catecholamines.
Further Information
Get more info on 'Aortic Body'.
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