The Second most important intracellular cation is: (A) Magnesium, (B) Calcium, (C) Sodium, (D) Iron
Answer is A. (A) Magnesium # MAGNESIUM is the second most important intracellular divalent cation and is involved in a variety of metabolic processes including glucose metabolism, ion channel translocation, stimulus-contraction coupling, stimulus secretion coupling, peptide hormone receptor signal transduction.> Normal concentrations of extracellular magnesium and calcium are crucial for normal muscular activity.