The respiratory buffer system regulates the pH by increasing or reducing the breath rate and depth. Addition of carbon dioxide (CO 2 ) to the body fluid increases the concentration of hydrogen ions (H + ) and reduces the pH. Elimination of CO 2 from the body fluid raises the pH. Thereby, the respiratory system buffers the acid or base when it becomes elevated. It has 2 to 3 folds strong buffering capacity when compared to chemical buffers.

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Chapter 24, Problem 8WWTS

Summary Introduction

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The respiratory buffer system regulates the pH by increasing or reducing the breath rate and depth. Addition of carbon dioxide (CO₂) to the body fluid increases the concentration of hydrogen ions (H⁺) and reduces the pH. Elimination of CO₂from the body fluid raises the pH. Thereby, the respiratory system buffers the acid or base when it becomes elevated. It has 2 to 3 folds strong buffering capacity when compared to chemical buffers.

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