The process for regulating pH that plays only a supporting role in the ECF but is quite important in pH control of the ICF is
A) protein buffers.
B) the carbonic acid-bicarbonate buffer system.
C) the phosphate buffer system.
D) changes in the rate and depth of breathing.
E) metabolic generation.

Question

Quizplus · Accepted Answer

The phosphate buffer system is effective in regulating pH in the ICF where phosphate concentrations are high. It is not as important in regulating pH in the ECF, where the concentration of phosphate is much lower. The other options play more prominent roles in pH regulation in the ECF.

The Process for Regulating PH That Plays Only a Supporting