Select the primary buffer system in the ECF.
A)bicarbonate/carbonic acid
B)chloride/hydrochloric acid
C)hemoglobin
D)phosphate
E)protein

Question

Quizplus · Accepted Answer

The bicarbonate/carbonic acid buffer system is the primary buffer system in the extracellular fluid (ECF) and helps to maintain the pH of the ECF within a narrow range. Other buffer systems such as phosphate, protein, and hemoglobin also play a role in buffering, but the bicarbonate/carbonic acid system is the primary system. The chloride/hydrochloric acid buffer system is a buffer system within cells, not the ECF.

Select the Primary Buffer System in the ECF