. Compare and contrast controls of bone remodeling exerted by hormones and by me

In adult skeletons, bone remodeling is balanced bone deposit and removal; bone deposit occurs at a greater rate when bone is injured; and bone resorption allows minerals of degraded bone matrix to move into the blood.

Control of Remodeling

The hormonal mechanism is mostly used to maintain blood calcium homeostasis, and balances activity of parathyroid hormone and calcitonin. In response to mechanical stress and gravity, bone grows or remodels in ways that allow it to withstand the stresses it experiences.

Bone Repair

Fractures are breaks in bones, and are classified by: the position of the bone ends after fracture, completeness of break, orientation of the break relative to the long axis of the bone, and whether the bone ends penetrate the skin.

Repair of fractures involves four major stages: hematoma formation, fibrocartilaginous callus formation, bony callus formation, and remodeling of the bony callus.