Muscular System and Skeletal System Practice Test

When a bone breaks, healing unfolds in a clear sequence that builds stability step by step. First, a hematoma forms at the fracture site and inflammation kicks in to clean up debris and release signals that start repair. Next, soft callus develops as fibrocartilaginous tissue bridges the gap, providing some stability. This soft callus is then replaced by a hard callus composed of woven bone, which restores much of the structural support. Finally, remodeling reshapes that woven bone into mature lamellar bone, gradually restoring the bone’s normal strength and architecture.

The best answer captures all four stages in order: hematoma and inflammation, soft callus formation, hard callus formation with woven bone, and remodeling to lamellar bone restoring strength. The other statements are incomplete or inaccurate because they omit stages (like soft callus or remodeling), imply direct transition to lamellar bone, or suggest healing without any callus at all.