Final answer:
Bone remodeling is a lifelong process in which osteoclasts break down old bone and osteoblasts replace it. This process helps shape the skeleton, repair bone flaws, and maintain mineral homeostasis in the blood.
Step-by-step explanation:
Bone remodeling occurs throughout life as osteoclasts reabsorb bone tissue and osteoblasts replace the bone. Osteoclasts are bone cells responsible for breaking down old bone, while osteoblasts are bone cells responsible for forming new bone. This process helps shape the skeleton, repair bone flaws, and maintain mineral homeostasis in the blood.