Which is the main buffer system found in the ECF?

A)HCI /NaOH buffer system
B)phosphate buffer system
C)CO2 / HCO3 buffer system
D)sulfate buffer system
E)amino acid buffer system

C) CO2 / HCO3 buffer system

The main buffer system found in the extracellular fluid (ECF) is the CO2/HCO3 buffer system. (Answer: C) CO2/HCO3 buffer system)