Question

33 multiple choice 2 points which buffer system contributes to the regulation of ph in the ecf? phosphate buffer system carbonic acid - bicarbonate buffer system protein buffer system respiratory buffer system

Explanation:

The carbonic acid - bicarbonate buffer system is the most important buffer system for regulating pH in the extracellular fluid (ECF). It can quickly adjust changes in hydrogen ion concentration. The phosphate buffer system is more important in the intracellular fluid and urine. The protein buffer system is also involved in pH regulation but is not the main one for ECF pH regulation. The respiratory buffer system is related to the regulation of carbon dioxide levels and affects pH but is not a buffer system in the same sense as the others mentioned here.

Answer:

B. Carbonic acid - bicarbonate buffer system