What is an osteocyte?

Question

What is matrix? Every site is saying that, but I have no clue.

Answer 1

Matrix is the network of collagen found in our bones..

Osteocytes are mature bone cells.

Answer 2

These are bone making cells (osteoblasts) that have become trapped in bone. The "matrix" is is mainly mineralized type 1 collagen.  

While trapped, they are still connected to other cells, undergo nutrient exchange and cell-cell communication. Their primary function is to maintain bone.  

Answer 3

osteocyte is a bone mature cell and they cant divide (osteoblast is a young cell that can divide) between the cell there is a substantia that is called matrix and it has kolagen and chondroitin sulfate (the matrix is produced by the osteoblast)