Brian has been diagnosed with a hypersecretory tumor of the parathyroid gland. What hormone will be hypersecreted? Would a hypersecretory tumor produce more than,less than, or the same as the normal amount of this hormone? What ion does this hormone control? Will this ion be found in higher or lower concentration in the blood? Will the ion be found higher or lower concentration in the urine? what painful kidney complication may result as a consequence of this concentration of the ion in the urine?