Changes

Osteoblasts, osteocytes, chondroblasts and chondrocytes are derived from the stromal fibroblastic system ('''osteoprogenitor cells'''). Osteoclasts are derived from the haematopoietic system.

Osteoblasts, osteocytes, chondroblasts and chondrocytes are derived from the stromal fibroblastic system ('''osteoprogenitor cells'''). Osteoclasts are derived from the haematopoietic system.

==Organization of Bone==

==Organisation of Bone==

The normal progression of bone is from woven bone to lamellar bone, even in pathology, except for [[Craniomandibular Osteopathy|canine craniomandibular osteopathy]] and [[Hypervitaminosis D|hypervitaminosis D]], where lamellar bone is replaced by woven bone.

The normal progression of bone is from woven bone to lamellar bone, even in pathology, except for [[Craniomandibular Osteopathy|canine craniomandibular osteopathy]] and [[Hypervitaminosis D|hypervitaminosis D]], where lamellar bone is replaced by woven bone.