Most impoant buffer in interstitial fluid:: (A) Phosphate, (B) Bicarbonate, (C) Histidine, (D) Protein
Answer is B. Principal buffers in body fluids: Blood H2CO3 = H+ + HCO3-HProt complex = H+ + Prot-HHb= H+ + Hb- Interstitial fluid H2CO3=H+ + HCO3- Intracellular fluid HProt complex = H+ + Prot-H2PO4- = H+ + HPO42-