Biology 20 – Unit D

Chemoreceptors monitor the level of CO2 and O2 in the blood. The pH of arterial blood tends to be between 7.35 and 7.45, which is a very narrow range. A condition called respiratory acidosis occurs when the blood pH drops, and respiratory alkanosis when the blood pH rises. a) CO2 Receptors: CO2 dissolves in the blood to form an acid. ................
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