In proximal tubule, HCO3 is absorbed with the step of: (A) Na+ Cl cotranspoer, (B) Na+ - K+2Cl contraspoer, (C) Na+ - H+ exchanger, (D) Na+ -K+ exchanger
Answer is C. HCO3 is absorbed with the step of Na+ - H+ exchanger Ref: Ganong's review of medical physiology; 24th edition; page no; 680 Ref of imag :