Structure Growth

"The trabecular bone is first resorbed by osteoclasts, creating a shallow resorption pit known as a "Howship's lacuna". Then osteoblasts deposit compact bone within the resorption pit. Eventually, the fracture callus is remodelled into a new shape which closely duplicates the bone's original shape and strength.["

The osteoclasts remove old material, and the osteoblasts deposit new. I think this is an excellent illustration of how it is possible for physical structure to be remodelled to reflect outside influences.


From: http://en.wikipedia.org/wiki/Bone_healing