When Is the Carbonic Acid-Bicarbonate Buffer System Ineffective Against Drastic

question 46

Multiple Choice

When is the carbonic acid-bicarbonate buffer system ineffective against drastic pH changes in the body?

• A) when there is an excess of CO₂ in the blood
• B) when there is an excess of O₂ in the blood
• C) during carbon monoxide poisoning
• D) during atelectasis
• E) when air enters the pleural cavity of the lungs

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