Which process leads to bone becoming stronger and thicker in areas that experience repetitive loading?

Which process leads to bone becoming stronger and thicker in areas that experience repetitive loading?

• A. Osteoclast resorption
• B. Bone remodeling without modeling
• C. Bone modeling driven by osteoblasts
• D. Calcification without cells

Answer: (C)

When bone is repeatedly loaded, it adapts by adding new bone on the surfaces where strain is highest, increasing thickness and strength where it’s needed. This growth is driven by osteoblasts, the cells that lay down new bone matrix, which then mineralizes to strengthen the area. Osteocytes sense the mechanical strain and signal osteoblasts to form more bone, a response that changes the bone’s geometry rather than just renewing old tissue. This contrasts with resorption by osteoclasts, which would reduce bone mass, and with remodeling that doesn't alter shape. Calcification without cells wouldn’t produce this adaptive thickening. So the strengthening in response to repetitive loading comes from osteoblast-driven bone modeling.

When bone is repeatedly loaded, it adapts by adding new bone on the surfaces where strain is highest, increasing thickness and strength where it’s needed. This growth is driven by osteoblasts, the cells that lay down new bone matrix, which then mineralizes to strengthen the area. Osteocytes sense the mechanical strain and signal osteoblasts to form more bone, a response that changes the bone’s geometry rather than just renewing old tissue. This contrasts with resorption by osteoclasts, which would reduce bone mass, and with remodeling that doesn't alter shape. Calcification without cells wouldn’t produce this adaptive thickening. So the strengthening in response to repetitive loading comes from osteoblast-driven bone modeling.