The lamellae that lie between osteons are termed?

The lamellae that lie between osteons are termed?

• A. Interstitial lamellae
• B. Lamellae
• C. Trabeculae
• D. Canaliculi

Answer: (A)

Lamellae are the thin layers of mineralized bone matrix that form the walls of osteons. An osteon (Haversian system) has concentric lamellae around a central canal. When bone remodels, old osteons are partly resorbed and the remaining lamellae between adjacent osteons persist as fragments. These remnants between osteons are called interstitial lamellae. They reflect prior osteonal organization but no longer surround a central canal, which distinguishes them from the lamellae that actively surround an osteon. For contrast, trabeculae are the lattice of cancellous bone, and canaliculi are the tiny channels that connect osteocytes—so interstitial lamellae specifically refer to those lamellae found between osteons.

Lamellae are the thin layers of mineralized bone matrix that form the walls of osteons. An osteon (Haversian system) has concentric lamellae around a central canal. When bone remodels, old osteons are partly resorbed and the remaining lamellae between adjacent osteons persist as fragments. These remnants between osteons are called interstitial lamellae. They reflect prior osteonal organization but no longer surround a central canal, which distinguishes them from the lamellae that actively surround an osteon. For contrast, trabeculae are the lattice of cancellous bone, and canaliculi are the tiny channels that connect osteocytes—so interstitial lamellae specifically refer to those lamellae found between osteons.