Which of the Following is Not Considered a Mechanism for Regulating

Question

Which of the following is not considered a mechanism for regulating the pH of body fluids? A) buffers in the blood B) the stomach absorbing acid C) the lungs removing carbon dioxide D) the kidneys removing H⁺ and OH^- ions

Accepted Answer

The stomach does secrete acid, but it is not involved in regulating the pH of body fluids in the way that the other three mechanisms are. Buffers in the blood work to maintain a stable pH by accepting or donating hydrogen ions as needed, the lungs remove excess carbon dioxide which can create acidic conditions when dissolved in water, and the kidneys remove excess acids and bases by producing and excreting urine.