Relier Pairs 1.2.7 Bone RemodelingVersion en ligne Calcium feedback and steps of bone remodeling par Laura Roy 1 Step 3 of Bone Remodeling 2 Step 1 of Bone Remodeling 3 Thyroid gland 4 Osteoblast 5 Step 4 of Bone Remodeling 6 Parathyroid hormone 7 Hypercalcemia 8 Calcitonin 9 Step 2 of Bone Remodeling 10 Parathyroid 11 Osteoclast 12 Hypocalcemia Releases calcitonin Bone Remodeling - Compact bone replaces woven bone. Internal callus removed. Medullary cavity is restored Bony Callus Formation. Takes several weeks to months. Osteoclasts break down fibrous cartilage Osteoblasts lay new bone matrix, made of osteocytes. Bone is MOSTLY healed at this stage Releases parathyroid hormone A hematoma is a “blood tumor” that forms at the site of the break This painful, swollen area fills with blood from the broken blood vessels Fibrocartilaginous callus formation. Connective tissue stem cells & capillary blood vessels penetrate. Phagocytes clear away junk. Cartilage and blood vessels start to form to create new bone High calcium levels Breaks down bone A hormone that increases Ca in the blood by stimulating bone to be broken down. Low calcium levels A hormone that lowers Ca in blood by stimulating bone to be built. Builds bone
Créer jeu