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130 Medicine

Which of the following Slatements is not true?

AParathyroid hormone-related protein is responsible for causing hypercalcemia in cancer patients
BThe unionized fraction of calcium in the plasma is an impoant determinant of PTH secretion (Correct Answer)
CMg2+ influences PTH secretion in the same direction as Ca2+ but is a less potent secretagogue
DCa2+influences PTH secretion by acting on a calcium sensor G-protein coupled receptor located in the parathyroid gland