BIOLOGY 12 - RESPIRATION - CHAPTER NOTES

of the brain. It detects the rising levels of CO. 2. and H+. This center is not affected by low oxygen levels. There are also chemoreceptors in the . carotid bodies, located in the carotid arteries, and in the . aortic bodies, located in the aorta, that respond primarily to H+ concentration, but also to the level of carbon dioxide and oxygen in ... ................
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