Bone tissue is composed of osteogenic cells, osteoblasts, osteocytes in lacunae, and osteoclasts. The tissue develops a mineralized extracellular matrix. When dragging the labels, we get A) 3-2, B) 1-4-6, C) 5-9-10, D) 7-8.
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Let us first review how bone tissue is composed. Then, we will drag each label into the proper position.
Bone tissue differentiates from other tissues because of the mineralized extracellular matrix.
This tissue provides support and protection due to the rigidity and hardness of the matrix.
The bone cells are:
- Osteoprogenitores → in charge of osteoblasts production
- Osteoblasts → Synthesize and secrete osteoid matrix that will later calcify
- Osteoclasts → Phagocytic cells in charge of osseous resorption and bone modulation.
Osteoprogenitor cells produce osteoblast cells.
Osteoblasts are in charge of producing the extracellular matrix.
Among the matrix, there are spaces called lacunae.
When the extracellular matrix mineralizes, some of the osteoblasts get trapped in lacunae and turn into osteocytes.
Each lacuna contains an osteocyte.
Trapped osteoblasts and osteocytes are joint by nexus union canaliculus
In compact tissue, the bony matrix is arranged into concentric superposed laminae. Lacunae and osteocytes can be found in between.
These laminae are arranged around a central longitudinal canal.
The whole unit -matrix, lacunae, and canal- compose the osteone.
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Now, we will drag the labels according to the cells.
Labels:
- Overactivity results in increased bone density
- Differentiate into osteoblasts
- Stem cells
- Bone building cells
- Bone resorbing cells
- Abundant in mitochondria
- Trapped in lacunae
- Bone cells encased in matrix
- Massive multinucleate cells
-
Have a ruffled border
Cells:
A) Osteogenic cell
B) Osteoblast
C) Osteoclast
D) Osteocyte
A) Osteogenic Cells
- 3- Stem cells
- 2- Differentiate into osteoblasts
B) Osteoblasts
- 1- Overactivity results in increased bone density
- 6- Abundant in mitochondria
- 4- Bone building
C) Osteoclasts
- 9- Massive multinucleate cells
- 5- Bone resorbing cells
- 10- Have a ruffled border
D) Osteocytes
- 7- Bone cells encased in matrix
- 8- Trapped in lacunae
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