Bone tissue Flashcards
What are the four types of cells present in bone?
The histology of the bone includes…
Otseoprogenitor cells, Osteoblast, Osteocytes and Osteoclast.
What is Compact bone Tissue?
Compact Bone is the strongest of bone tissues, it contains very few spaces.
It is found right beneath the Periosteum and makes up the bulk of the Diaphysis of Long bones.
What is Spongy Bone Tissue?
This type of tissue is also called “Cancellous bone” and its always located in the interior of a bone protected by the outside Compact bone tissue.
It consist of Lamellae that haver an irregular pattern of thin columns called Trabeculae.
What is Calcification in bones?
When Minerals are deposited into the framework formed by the collagen fibers of the Extracellular Matrix, they crystallize and the Tissues harden it is Inated by the bone building cells called Osteoblast.
What are in the spaces between the Trabeculae of Spongy Bone Tissue?
This would include the Red and Yellow Bone marrow.
The Marrow is used for creating red blood cells and in other bones there is Yellow bone marrow(Adipose Tissue).
What are Osteoprogenitor cells?
These are Unspecialized bone Stem cells that form almost all connective tissue and become Osteoblast.
They are found under the Periosteum, Endosteum and in the canals within bone containing blood vesicles.
What are Osteoblast?
These cells synthesis and secrete collagen fibers and other organics used to build the bones extracellular matrix.
These cells are also used to start the Calcification process.
What are Osteocytes?
These cells are the Mature bone cells that help maintain bone metabolism, such as exchanging of nutrients and waste with the blood. like Osteoblast, Osteocytes do not undergo cell devision.
What are Osteoclast?
These are huge cells made up of as many as 50 monocytes (this is a type of white blood cell).
On the side of the cell facing the bones extracellular matrix the Lysomsmos release enzymes to break it down. This is called Bone Resorption and it is used for regulating Calcium levels in the blood.
