NEET BIOLOGY

Detailed explanation-1: -Osteocytes are cells lying within the bone itself and are ‘entrapped’ osteoblasts. They are post-proliferative, representing the most mature differentiation state of osteoblast lineage. There are about 25, 000 osteocytes per mm3 of bone.

Detailed explanation-2: -Compact Bone Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae. Small channels (canaliculi) radiate from the lacunae to the osteonic (haversian) canal to provide passageways through the hard matrix.

Detailed explanation-3: -Osteocytes are derived from mesenchymal stem cells through osteoblast differentiation. Their entrapment within the bone matrix is possibly an active process and an embedment in neighbor osteoid forming osteoblasts (Bonewald, 2011).

Detailed explanation-4: -osteocyte, a cell that lies within the substance of fully formed bone. It occupies a small chamber called a lacuna, which is contained in the calcified matrix of bone. Osteocytes derive from osteoblasts, or bone-forming cells, and are essentially osteoblasts surrounded by the products they secreted.

Detailed explanation-5: -Osteocytes are former osteoblasts that become surrounded by unmineralized matrix (osteoid) during bone formation; they make up 90–95% of the adult bone cell population. The complex phenotypic transition from osteoblast to osteocyte has been reviewed recently [1].