What is the primary buffer system in the ECF
A)bicarbonate/carbonic acid
B)chloride/hydrochloric acid
C)haemoglobin
D)phosphate

Question

Quizplus · Accepted Answer

The bicarbonate/carbonic acid buffer system is the primary buffer system in the extracellular fluid (ECF). This buffer system works by converting strong acids or bases into weak acids or bases through the chemical reaction between carbon dioxide (CO2) and water (H2O) to form carbonic acid (H2CO3), which dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-), or vice versa. This buffer system helps to maintain the pH of the ECF within a narrow range. The other buffer systems listed are not as important in the ECF as the bicarbonate/carbonic acid buffer system.

What Is the Primary Buffer System in the ECF