How do lungs maintain acid-base homeostasis?

Answer:

The lungs help maintain acid-base by providing an immediate response to changes in C02 levels in the blood. As C02 levels rise hydrogen ion levels rise as as C02 + H20 = H+ + HCO3-. An increase in the rate of breathing will blow out the C02. All this is only a short term correction. Longer range corrections in acid-base balance take place in the kidneys and intestines.

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