<prompt> Osteoclasts are inhibited byParathyroid hormoneCalcitonin1,25-dihydroxycholecalciferolTumor necrosis factor  <response>: Osteoclasts are Bone cells that break down and remove bone tissue.Calcitonin- a polypeptide hormone secreted by the parafollicular or C cells of the thyroid gland; it is involved in plasma calcium homeostasis and acts to decrease the rate of bone resorption.Ref: Ganong;s review of medical physiology; 24th edition; page no:-387 