Bone Cells
There are four types of
cell in bone tissue:
- Osteogenic cells:
They are precursor of connective tissue.
- Osteoblast:
They are responsible for bone formation.
- Osteocyte:
Maintain the cellular activities in bone tissue.
- Osteoclast:
Found on bone surface and function in resorption.
What is Bone Remodeling?
Bone is continuously
renewed through a process called remodeling.
This process consists of bone resorption and
bone formation. In bone resorption, old bone
tissue is broken down and removed by osteoclasts
cells. During bone formation, new bone tissue is
laid down to replace the old tissue by
osteoblasts cells. Osteoclast and osteoblast
function is regulated by some hormones like
calcitonin, parathyroid hormone, vitamin D,
estrogen (in women) and testosterone (in men).
