Bone

Bones are made of a combination of compact bone tissue for strength and spongy bone tissue for compression in response to stresses.

The osteoblast, osteoclast, osteocyte, and osteoprogenitor bone cells are responsible for the growing, shaping, and maintenance of bones.

Intramembranous ossification stems from fibrous membranes in flat bones, while endochondral ossification stems from long bone cartilage.

Long bones lengthen at the epiphyseal plate with the addition of bone tissue and increase in width by a process called appositional growth.

Bone is remodeled through the continual replacement of old bone tissue, as well as repaired when fractured.