Osteoclast has specific receptor for :
B i.e. CalcitoninCalcitonin exes its Ca2+ lowering effect by inhibiting bone resorption. This action is direct and calcitonin inhibits the activity of osteoclase 2. It also increases Ca2+ excretion in urine.HormonesBone cells on which theirreceptors are presentCalcitoninOsteoclastQParathyroidOsteoblastQVitamin DOsteoblastQCalcitonin exes its Ca2+ lowering effect by inhibiting bone resorption. This action is direct and calcitonin inhibits the activity of osteoclase 2. It also increases Ca2+ excretion in urine.
Parathyroid hormone.
Calcitionin.
Thyroxin.
Vit D3.