(a) - compaci bens - medullary cavity - metaphysia - proximal eplptivais. - spongy bone (1) 2 3 4 5 (a) Longtudinally soctioned lomur (thigh bone) (b) - canaliculi - central canal - concentric lamella - lacuna 6 7 8 9 (b) Cross-soctian of ground compact bone (c) - osteocyte - trabecula 10 11 (c) Photomicrograph of spongy bone FIGURE 8,3 Gross and microscopic features of compact and spongy bone. .