Question

Osteocytes are bone cells. Collagen fibers and calcium salts are found in abundance between and among the osteocytes. The collagen and calcium salts are

a) components of the plasma membrane of osteocytes.
b) part of the extracellular matrix secreted by osteocytes.
c) extensions of the endoplasmic reticulum.
d) deposited by the circulatory system and are not associated with the osteocytes.

Answer 1

Part of the extracellular matrix secreted by osteocytes. (Ans. B)

Step-by-step explanation:

Cells which are present on bones are known as osteocytes. Bone is composed of extracellular matrix, and cells. There are three types of cells which are present in the bones:

1) Osteoprogenitor cells.

2) Osteoblast.

3) Osteocyte.

Extracellular matrix is composed of organic matrix consisting glycoproteins, proteoglycans, osteocalcin also known as calcium binding proteins, and osteonectin which anchors bone mineral to collagen.