Final answer:
Bones are continuously broken down in a process called bone resorption as part of bone remodeling, which also includes the production and repair of bone. This involves the actions of osteoblasts creating new bone and osteoclasts breaking down old bone.
Step-by-step explanation:
Throughout our lifetime, bones are always being produced, repaired, and broken down. This ongoing process is known as bone remodeling, which involves two main types of cells: osteoblasts and osteoclasts. Osteoblasts are responsible for the formation of new bone tissue, while osteoclasts break down old or damaged bone in a process called bone resorption.
Bone remodeling is essential for maintaining the strength and health of our skeletal system. It not only helps in repairing micro-damages from daily stresses but also plays a vital role in regulating calcium levels in the bloodstream. Regular physical activity and proper nutrition, including adequate calcium and vitamin D intake, are critical for healthy bone remodeling.