While discussing hormonal control of bone formation, one should note that which hormone lowers blood calcium levels and decreases bone resorption?

The hormone that helps bone calcification and new formation or osteoblastic stimulation is osteocalcin par excellence, although there are others that collaborate with bone synthesis such as vitamin D, thyroid hormones, and even testosterone.

Explanation:

The neoformation, calcification or decalcification of the bone is regulated by the bone cells that are the osteoclasts and osteblasts.

These cells capture the amount of calcium in the blood, that is, calcium, and according to its values they decide to calcify bone, or desalcify it by means of bone resorption.

The body's calcium balance is an ideal balance between the endocrine system, the degree of calcium and bone cells.