Here's a breakdown:

* Osteoblasts: These are the bone-building cells. They synthesize and secrete the organic matrix of bone, which is primarily composed of collagen. They also play a crucial role in mineralizing the matrix by depositing calcium and phosphate.

* Osteocytes: These are mature bone cells that are embedded within the bone matrix. They maintain the bone tissue and help regulate bone remodeling.

* Osteoclasts: These are large, multinucleated cells responsible for bone resorption. They break down bone tissue, releasing calcium and phosphate into the bloodstream.

So, while all three types of cells are involved in bone tissue, it's the osteoblasts that are primarily responsible for forming new bone.