What are the functions of osteoprogenitor cells, osteoblasts, osteocytes, osteoclasts?
Osteoprogenitors differentiate into osteoblasts.
Osteoblasts: synthesize ECM; secrete vesicles that induce mineralization of the osteoid; lots of RER
Osteocytes: osteoblasts that become trapped in the matrix; maintain bone, stimulate osteoblasts and bone lining cells; can secrete or resorb small amounts of bone
Osteoclasts: bone resorption, very big and multinucleate