Aortic and carotid bodies are:

Question

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The respiratory center is directly sensitive to the levels of hydrogen ions (H⁺)in the blood.However,when carbon dioxide (CO₂)enters the blood,it reacts with water and releases hydrogen ions.In this way,CO₂ participates in regulating the breathing rate.When hydrogen ions rise in the blood and the pH decreases,the respiratory center increases the rate and depth of breathing.The chemoreceptors in the carotid bodies,located in the carotid arteries,and in the aortic bodies,located in the aorta,stimulate the respiratory center during intense exercise due to a reduction in pH and also if and when arterial oxygen decreases to 50% of normal.

Aortic and Carotid Bodies Are