CELLS OF THE BONE TISSUE – 2
1 – Osteoblasts (highlighted in orange after clicking) cover the outer and inner bone surfaces.The osteoblasts are usually the majority of cells that cover the surfaces of the trabeculae. A few flattened, spindle-shaped cells, can be seen. They are termed “inactive osteoblasts” but perhaps could be osteoprogenitor cells.
2 – Osteocytes highlighted in green are placed in small cavities called lacunae surrounded by the pink stained extracellular matrix. Two osteocytes (highlighted in dark green) placed close to the trabecular surface are possibly cells that became recently surrounded by bone matrix, having transitioned from osteoblasts to osteocytes.
3 – An osteoclast (highlighted in dark blue) is placed on the outer surface of a trabecula. It is very large and exhibits a srongly stained cytoplasm and several nuclei.
4- Loose connective tissue highlighted in weak blue surrounds the trabecula.
Notice two blood vessels at the upper right corner and at the bottom of the image.
2 – Osteocytes highlighted in green are placed in small cavities called lacunae surrounded by the pink stained extracellular matrix. Two osteocytes (highlighted in dark green) placed close to the trabecular surface are possibly cells that became recently surrounded by bone matrix, having transitioned from osteoblasts to osteocytes.
3 – An osteoclast (highlighted in dark blue) is placed on the outer surface of a trabecula. It is very large and exhibits a srongly stained cytoplasm and several nuclei.
4- Loose connective tissue highlighted in weak blue surrounds the trabecula.
Notice two blood vessels at the upper right corner and at the bottom of the image.
