What is the histology of compact bone?

What is the histology of compact bone?

Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.

What is the histology of compact and spongy bone?

Compact bone tissue is composed of osteons and forms the external layer of all bones. Spongy bone tissue is composed of trabeculae and forms the inner part of all bones.

What is the histologic composition of bones?

Bone is a modified form of connective tissue which is made of extracellular matrix, cells and fibers. The high concentration of calcium and phosphate based minerals throughout the connective tissue is responsible for its hard calcified nature.

What is the name of the basic histological unit of compact bone?

The diagram above shows a transverse view of an osteon (Haversian system) – the basic unit of compact bone.

What are the basic units of compact bone called?

Compact Bone Structure. The basic units of compact bone are called osteons or Haversian systems. These are cylinder-shaped structures that have a mineral matrix and are home to osteocytes (mature bone cells) that are trapped in the matrix.

What is the function of a compact bone?

The function of compact bone is to help to keep the levels of these minerals at constant within the blood. The arteries and veins that run through the Haversian canals provide a means to transport the minerals to and from the compact bone. The minerals are deposited for storage within the lamellae when blood levels are high.

What is the compact bone used for?

The compact bone is the main structure in the body for support, protection, and movement. Due to the strong nature of compact bone, compared to spongy bone, it is the preferred tissue for strength. Spongy bone is used for more active functions of the bones, including blood cell production and ion exchange.

What type of bone consist of a compact bone?

Both types are found in most bones. Compact bone forms a shell around cancellous bone and is the primary component of the long bones of the arm and leg and other bones, where its greater strength and rigidity are needed. Mature compact bone is lamellar, or layered, in structure.