Which of the following buffer systems acts as the primary buffer against non-carbonic-acid changes in the extracellular fluid?
A) the phosphate buffer system
B) the protein buffer system
C) the hemoglobin buffer system
D) the bicarbonate-carbonic acid buffer system
E) the monosodium buffer system

Question

Quizplus · Accepted Answer

The bicarbonate-carbonic acid buffer system is the primary buffer system against non-carbonic-acid changes in the extracellular fluid. This buffer system helps regulate the pH of the body by shifting the balance between bicarbonate (a base) and carbonic acid (an acid) as needed to maintain a stable pH. The other buffer systems listed also contribute to pH regulation, but to a lesser extent compared to the bicarbonate-carbonic acid buffer system.

Which of the Following Buffer Systems Acts as the Primary