The concentric rings surrounding the central canal of a compact bone unit are called?

The concentric rings surrounding the central canal of a compact bone unit are called?

• A. Lacunae
• B. Lamellae
• C. Canaliculi
• D. Volkmann's canal

Answer: (B)

Lamellae are the concentric rings surrounding the central canal of a compact bone unit. They are thin layers of mineralized matrix with collagen fibers laid down in alternating directions, forming the circular sheets that strengthen the osteon and help it resist twisting. Between these rings lie lacunae, small spaces that house osteocytes, and canaliculi, tiny channels that connect lacunae to each other and to the central canal for nutrient and waste exchange. The central canal itself holds blood vessels and nerves, while Volkmann's canals run perpendicular to connect neighboring osteons and supply the bone tissue.

Lamellae are the concentric rings surrounding the central canal of a compact bone unit. They are thin layers of mineralized matrix with collagen fibers laid down in alternating directions, forming the circular sheets that strengthen the osteon and help it resist twisting. Between these rings lie lacunae, small spaces that house osteocytes, and canaliculi, tiny channels that connect lacunae to each other and to the central canal for nutrient and waste exchange. The central canal itself holds blood vessels and nerves, while Volkmann's canals run perpendicular to connect neighboring osteons and supply the bone tissue.