Physiology A high PTH levels affects which of the following processes to return plasma calcium levels toward normal? A Inhibit calcium secretion from the gastrointestinal tract B Reduce the expression of plasma calcium-binding proteins C Stimulate bone resorption, leading to the release of calcium into the plasma D Stimulate the release of calcium from muscle cells 💡 Explanation A high PTH levels affects which of the following processes to return plasma calcium levels toward normal? ✓ Correct Answer: C. Stimulate bone resorption, leading to the release of calcium into the plasma