Physiology Interaction of histamine with H2 receptor in parietal cell results in A Increase in intracellular Na+ concentration B Increase in intracellular CAMP production C Increase in intracellular Ca2+ concentration D Stimulates IP3 - DAG pathway 💡 Explanation Interaction of histamine with H2 receptor in parietal cell results in ✓ Correct Answer: B. Increase in intracellular CAMP production