Bone is alive and always rebuilding. One crew lays down new bone while another dissolves old bone — the constant tug-of-war is remodeling. Watch it happen, and meet the four cells.
Remodeling in action
Bone remodelingbuild vs break down
The four bone cells
Balance matters: weight-bearing exercise and enough calcium + vitamin D tip it toward building. Aging, inactivity, and low estrogen tip it toward loss — leading to osteoporosis (brittle, porous bone).
📷 Reference image
A real labeled figure to compare with the interactive above.
Bone Cells & Remodeling — Laboratoires Servier, CC BY-SA 3.0 (via Wikimedia Commons)
