7-5 Bone

CELLS OF THE BONE TISSUE – 3

Upper figure:
– Bone extracellular matrix: stains pink after eosin staining and becomes highlighted in light blue after hovering the cursor or clicking on the image.
– Osteocyte: inside a lacuna, a small cavity of the bone matrix. The osteocyte nucleus and its lacuna are highlighted in dark blue.
– Osteoblasts: active and inactive osteoblasts on the trabecular surface, highlighted in orange.

Lower figure:
Osteocytes inside a bone trabecula (highlighted in blue), surrounded by bone matrix highlighted in light blue.
Osteoblasts on the bone surface (highlighted in orange).

Both images show cuboidal osteoblasts actively secreting organic bone matrix and flattened osteoblasts probably inactive cells.