Physiology Gastrointestinal System 4ad9ee35 Net secretion of K+ occurs in the:- A Duodenum B Jejunum C Ileum D Colon High-Yield Explanation Small intestine Colon Reabsorption of Na+, Cl-, K+, watersecretion of HCO-3 Reabsorption of Na+, Cl-, water secretion of K+, HCO-3