aortic body

A chemoreceptor in the wall of the aortic arch that detects changes in blood gases, esp. oxygen, and pH. It is innervated by the vagus nerve and stimulates reflex changes in heart rate, respiration, and blood pressure that restore normal blood oxygen levels.

aortic body

an area of nervous tissue in the wall of the AORTA, close to the heart, which is sensitive to small changes in blood CO₂ levels. A rise in partial pressure of CO₂ triggers nerve impulses from the aortic body to cardiac/respiratory centres in the hindbrain via afferent nerve fibres (see BREATHING). A drop in CO₂ pressure causes inactivation of the aortic body (an example of a negative FEEDBACK MECHANISM).

单词	aortic body
释义	DictionarySeebody aortic body aortic body [ā′ȯrd·ik ′bäd·ē] (anatomy) aortic paraganglion aortic body aortic body A chemoreceptor in the wall of the aortic arch that detects changes in blood gases, esp. oxygen, and pH. It is innervated by the vagus nerve and stimulates reflex changes in heart rate, respiration, and blood pressure that restore normal blood oxygen levels. aortic body A chemoreceptor in the wall of the aortic arch that detects changes in blood gases, esp. oxygen, and pH. It is innervated by the vagus nerve and stimulates reflex changes in heart rate, respiration, and blood pressure that restore normal blood oxygen levels. See also: body aortic body an area of nervous tissue in the wall of the AORTA, close to the heart, which is sensitive to small changes in blood CO₂ levels. A rise in partial pressure of CO₂ triggers nerve impulses from the aortic body to cardiac/respiratory centres in the hindbrain via afferent nerve fibres (see BREATHING). A drop in CO₂ pressure causes inactivation of the aortic body (an example of a negative FEEDBACK MECHANISM). FinancialSeeBody
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