Which statements are true of the cells of bones.
(Select multiple):
a) Osteoblasts become osteocytes
b) Osteoblasts are responsible for the production of bone
c) The endosteum is found at the proximal and distal exterior ends of the bone
d) Osteoclasts are primarly responsible for the process of resorption, or breaking down bone
e) Osteoprogenitor cells are unspecialized precursor cells
f) All cells found in bones are actively undergoing mitosis
g) Osteocytes are primarily responsible for breaking down bone and removing the calcified matrix