Osteoclast are stimulated by
Refer Robbins page no 1207-1208 Parathyroid hormone related protein (PTHrP) is a local factor, expressed by perichondrial stromal cells and early proliferating chondrocytes, that activates the PTH receptor and maintains proliferation of chondrocytes.
Thyroxine
PTH
Calcitonin
Estrogen
Musculoskeletal system