Which term describes bone that is dense and organized into osteons?

Which term describes bone that is dense and organized into osteons?

• A. Spongy bone
• B. Lamellar bone
• C. Compact bone
• D. Dense bone

Answer: (C)

Compact bone is the dense, strong bone tissue organized into osteons (Haversian systems). Each osteon is a cylindrical unit with a central canal that contains blood vessels and nerves, surrounded by concentric lamellae of mineralized matrix and spaces called lacunae housing osteocytes connected by canaliculi. This organized, repetitive structure gives compact bone its rigidity and ability to withstand stress. Spongy bone lacks these osteons and instead has a porous network of trabeculae, making it lighter. Lamellar bone describes the layered organization of the matrix and is a feature of mature bone found in both compact and spongy tissue, but the key distinction here is the presence of osteons in compact bone.

Compact bone is the dense, strong bone tissue organized into osteons (Haversian systems). Each osteon is a cylindrical unit with a central canal that contains blood vessels and nerves, surrounded by concentric lamellae of mineralized matrix and spaces called lacunae housing osteocytes connected by canaliculi. This organized, repetitive structure gives compact bone its rigidity and ability to withstand stress. Spongy bone lacks these osteons and instead has a porous network of trabeculae, making it lighter. Lamellar bone describes the layered organization of the matrix and is a feature of mature bone found in both compact and spongy tissue, but the key distinction here is the presence of osteons in compact bone.