Aortic body
| Aortic body | |
|---|---|
 The heart, thoracic aorta and other great vessels (aortic body not visible, but aortic arch labeled at center) | |
| Details | |
| Nerve | Vagus nerve |
| Identifiers | |
| Latin | Glomus aorticum, corpora paraaortica |
| MeSH | D001016 |
| Anatomical terminology | |
The aortic bodies are one of several small clusters of peripheral chemoreceptors located along the aortic arch. They are important in measuring partial pressures of oxygen and carbon dioxide in the blood, and blood pH.
Structure
The aortic bodies are collections of chemoreceptors present on the aortic arch.[1] Most are located above the aortic arch,[2] while some are located on the posterior side of the aortic arch between it and the pulmonary artery below.[3] They consist of glomus cells and sustentacular cells.[1]
Some sources equate the "aortic bodies" and "
Function
The aortic bodies measure partial gas
- oxygen partial pressure.[7][8]
- carbon dioxide partial pressure.[7][8]
- pH (indirectly affected by carbon dioxide concentration).[1][8]
They are particularly sensitive to changes in pH.[2] Aortic bodies are more sensitive detectors of total arterial blood oxygen content than the carotid body chemoreceptors, which are more sensitive detectors of the partial pressure of oxygen in the arterial blood.[8]
The aortic bodies give feedback to the
Clinical significance
A
See also
- Carotid body
- Control of respiration
- Peripheral chemoreceptors
References
- ^ ISBN 978-0-12-386457-4, retrieved 2021-01-01
- ^ ISBN 978-0-12-378611-1, retrieved 2021-01-01
- ^ ISBN 978-0-12-227210-3, retrieved 2021-01-01
- ^ Aortic+Bodies at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- ^ Para-Aortic+Bodies at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- PMID 23165772.
- ^ PMID 17377046.
- ^ ISBN 978-0-12-801694-7, retrieved 2021-01-01
- ISBN 978-0-323-35775-3, retrieved 2021-01-01