Growth hormone:
PRODUCES IGF WHICH CAUSES CARTILAGE PROLIFERATION AT EPIPHYSEAL PLATE, RESULTING BONE ELONGATION
thyroid hormone:
STIMULATES BONE GROWTH BY STIMULATING METABOLIC RATE OF OSTEOBLASTS
Estrogen/testosterone:
STIMULATE OSTEOBLASTS; PROMOTE EPIPHYSEAL PLATE GROWTH AND CLOSURE
Calcitriol:
STIMULATES ABSORPTION OF CALCIUM IONS FROM THE SMALL INTESTINE INTO THE BLOOD
Parathyroid hormone:
INCREASES BLOOD CALCIUM LEVELS BY ENCOURAGING BONE RESORPTION BY OSTEOCLASTS
Calcitonin:
PROMOTES CALCIUM DEPOSITION IN BONE AND INHIBITS OSTEOCLAST ACTIVITY