Parathyroid hormone activates osteoblasts enhances release of calcium from bone is released when aldosterone levels climb results in a lowering of calcium levels targets the thyroid gland.

Parathyroid hormone enhances release of calcium from bone.

Explanation:

Parathyroid hormone (PTH) is produced by the parathyroid glands. The function of these hormones is to increase the levels of Ca²⁺ in blood when they are low. To increase the calcium in blood the parathyroid hormone enhances the release of calcium from the bone in a process called osteolysis.

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