Which bone type is immature and disorganized?

Which bone type is immature and disorganized?

• A. Woven bone
• B. Cortical bone
• C. Trabecular bone
• D. Lamellar bone

Answer: (A)

Immature bone is woven bone, formed quickly during fetal development or fracture repair. Its collagen fibers are laid down in a random, disorganized pattern rather than in parallel, orderly layers. This haphazard arrangement makes woven bone weaker and less mineralized, which is why it’s considered immature. Over time, remodeling replaces it with lamellar bone, which has highly organized, parallel collagen layers that provide greater strength. The dense outer cortical bone and the porous inner trabecular bone are mature forms with organized structure, and lamellar bone refers to that well-ordered, mature tissue. So the immature, disorganized type is woven bone.

Immature bone is woven bone, formed quickly during fetal development or fracture repair. Its collagen fibers are laid down in a random, disorganized pattern rather than in parallel, orderly layers. This haphazard arrangement makes woven bone weaker and less mineralized, which is why it’s considered immature. Over time, remodeling replaces it with lamellar bone, which has highly organized, parallel collagen layers that provide greater strength. The dense outer cortical bone and the porous inner trabecular bone are mature forms with organized structure, and lamellar bone refers to that well-ordered, mature tissue. So the immature, disorganized type is woven bone.