Aortic body
Aortic Body
The Aortic Body (pronounced: ay-OR-tik BOD-ee) is a small cluster of chemoreceptors and supporting cells located near the aortic arch. The aortic body detects changes in blood oxygen and carbon dioxide levels and helps regulate the cardiovascular system.
Etymology
The term "Aortic Body" is derived from the Greek words "aorte" meaning "that which is hung up," and "body" from the Old English "bodig," referring to the physical structure of a being.
Function
The Aortic Body is one of the body's peripheral chemoreceptors. It primarily responds to low oxygen levels (hypoxia) in the blood, but also detects changes in carbon dioxide levels and blood pH. When these changes are detected, the aortic body sends signals to the medulla oblongata in the brain, which then initiates responses to restore homeostasis.
Related Terms
- Chemoreceptor: A sensory receptor that responds to chemical stimuli.
- Aortic Arch: The part of the aorta that bends between the ascending and descending aorta.
- Medulla Oblongata: The lower half of the brainstem, controlling autonomic functions such as breathing and heart rate.
- Homeostasis: The tendency of the body to seek and maintain a condition of balance or equilibrium within its internal environment.
See Also
- Carotid Body: A similar cluster of chemoreceptors located in the carotid artery.
- Baroreceptor: A sensory receptor that responds to changes in blood pressure.
External links
- Medical encyclopedia article on Aortic body
- Wikipedia's article - Aortic body
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