Microscopic Structure Of Compact Bone
Each osteon is composed of concentric rings of calcified matrix called lamellae singular lamella. The haversian canal contains the bone s blood.
Histo Bone
It makes up the outer cortex of all bones and is in immediate contact with the periosteum.
Microscopic structure of compact bone. However compact bones also serve a function in storing and releasing calcium to the. That is called compact bone. It has fewer gaps and spaces but what really makes compact bone different from spongy bone is that it has a specific type of organization made up of these osteons these repeating functional units.
It is permeated by an elaborate system of interconnecting vascular canals the haversian systems which contain the blood supply for the osteocytes. Compact bone is the denser stronger of the two types of osseous tissue figure 6 3 6. Learn vocabulary terms and more with flashcards games and other study tools.
Start studying microscopic structure of compact spongy bone tissue. Here s a blown up view of an osteon. Spongy bone is used for more active functions of the bones including blood cell production and ion exchange.
Medic tutorials medicine and language 52 613 views. Compact bone structure duration. In long bones as you move from the outer cortical compact bone to the inner medullary cavity the bone transitions to spongy bone.
The basic microscopic unit of bone is an osteon or haversian system. A long bone. The compact bone is the main structure in the body for support protection and movement.
Compact bone it s no surprise that it s well more compact than spongy bone. Spongy bone also referred to as c ancellous bone spongy bone is composed of porous tissue and contains the bone marrow it surrounds spaces filled with red bone marrow. Due to the strong nature of compact bone compared to spongy bone it is the preferred tissue for strength.
While it is not as hard as compact bone spongy bone plays an important role of protecting the marrow where blood cells are produced. The structure of a long bone allows for the best visualization of all of the parts of a bone. The bone is arranged in concentric layers around those canals forming structural units called osteons immature compact bone does not contain osteons and has a woven structure.
This video describes the microscopic anatomy of compact bone. Mature compact bone is lamellar or layered in structure. Osteons are roughly cylindrical structures that can measure several millimeters long and around 0 2 mm in diameter.
Each osteon consists of a lamellae of compact bone tissue that surround a central canal haversian canal. The microscopic structural unit of compact bone is called an osteon or haversian system.
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