D9: Compact bone in cross-section. This sample is not decalcified. Concentric lamellae (*) surround the Haversian canals (one shown at a). Some of the lacunae are empty (arrowhead), but would normally contain an osteocyte each. A Volkmann's canal is shown at (b), connecting two Haversian systems. Do you remember what is in one of these transverse canals? Interstitial lamellae (arrow) are the remnants of previously existing osteons. Faint radial lines in the lamellae are the intercellular canaliculi allowing one osteocyte to communicate and interchange material with its neighbor