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Aortic body

Definition

noun, plural: aortic bodies

A cluster of chemoreceptors, baroreceptors and supporting cells located in the wall of the aortic of the aortic arch near the heart, and is sensitive to changes in blood pressure and levels of blood gases (i.e. carbon dioxide and oxygen).


Supplement

At times, the aortic bodies are used synonymously with paraaortic bodies. However, in strict sense, the aortic bodies involve chemoreceptors that regulate circulation and determine levels of blood oxygen concentration whereas paraaortic bodies involve chromaffin cells that synthesize and secrete catecholamines.


Word origin: from Gk aorte, the great artery, lit., something hung, carried; akin to aeírein to lift, carry.

Compare: paraaortic body.
See also: chemoreceptor, baroreceptor.


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SNS dilation of blood vessels

... pressure are sensed by peripheral baroreceptors in sinus caroticus and aortic arch and also by the stretch receptors in the atria which then secrete ... secretion by the kidney, less ADH and aldosteron secretion, thereby the body doesn't conserve water and salts maintaining blood osmolarity and ...

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by sdekivit
Sat Jan 21, 2006 5:19 pm
 
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Frog heart

... from the blood vessels (veins) that drain the various organs of the body. * The left atrium receives oxygenated blood from the lungs and skin ... fresh oxygen can be picked up. ---> only the blood passing into the aortic arches has been thoroughly mixed, but even so it contains enough oxygen ...

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by Dr.Stein
Tue Nov 15, 2005 2:06 pm
 
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Sequence of events in heart

1. The Right Atrium, receives "used blood" from the body. Blood will be pushed through the tricuspid valve to the 2. Right Ventricle, ... the body. As it pumps, the pressure will close the mitral valve and open the aortic valve, with blood passing through to the 7. Aorta, where it will be delivered ...

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by biostudent84
Thu Nov 10, 2005 5:56 pm
 
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Transverse section of body

Could anyone post a picture of the transverse section of the body featuring the diaphragm please. I wan to know which part is the dorsal and ventral part and the positions of the aortic artery and oesophagus respectively.

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by Navin
Wed Aug 17, 2005 12:50 pm
 
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