What is the histological structure of bone?
The structural layout of bone can be classified in one of the following groups: either trabecular (cancellous or spongy) or compact. Histologically, spongy bone is comprised of anastomosing strips of slender bone known as trabeculae that enclose marrow and blood vessels.
What are the structure of bones?
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 are the two basic structural bone types?
Compact (cortical) bone: A hard outer layer that is dense, strong, and durable. It makes up around 80 percent of adult bone mass. 2. Cancellous (trabecular or spongy) bone: This consists of a network of trabeculae or rod-like structures.
What is dense bone histology?
Compact bone is also called dense bone. Compact bone has the Haversian system. Immature bone is woven bone. It is nonlamellar bone or bundle bone. Spongy bone is also referred to as cancellous bone.
What are the 3 types of bone structures?
There are 3 types of bone tissue, including the following:
- Compact tissue. The harder, outer tissue of bones.
- Cancellous tissue. The sponge-like tissue inside bones.
- Subchondral tissue. The smooth tissue at the ends of bones, which is covered with another type of tissue called cartilage.
What is bone structure and function?
Bone provides shape and support for the body, as well as protection for some organs. Bone also serves as a storage site for minerals and provides the medium—marrow—for the development and storage of blood cells.
What is histological structure?
histology, branch of biology concerned with the composition and structure of plant and animal tissues in relation to their specialized functions. The terms histology and microscopic anatomy are sometimes used interchangeably, but a fine distinction can be drawn between the two studies.
What is lamellae in bone histology?
The alternating bright and dark concentric rings (lamellae) are due to an alternating arrangement of collagen fibres in the bone matrix. The collagen fibres in each layer are parallel to each other, but at right angles to the fibres in the alternating layers on either side.
What are the characteristics of bone histology?
Histology of Bone. The high concentration of calcium and phosphate based minerals throughout the connective tissue is responsible for its hard calcified nature. The histological structure, mode of ossification, cross-sectional appearance, and degree of maturity influences the classification of bony tissue.
What factors influence the classification of bone tissue?
The histological structure, mode of ossification, cross-sectional appearance, and degree of maturity influences the classification of bony tissue. In addition to discussing the cellular constituents of bone and the architectural arrangement of their products, this article will also address the embryology and mechanisms of ossification as well.
What is the structure of long bone based on bone maturity?
STRUCTURE OF LONG BONE BASED ON BONE MATURITY Lamellar bone WOVEN BONE LAMELLAR BONE • Lamellar appearance – arrangement of collagen fibres • Woven bone is weak- repair of fracture TYPES OF BONE : macroscopically Trabecular bone: •Cancellous or spongy bone •Ends of long bones Compact bone:
What is the structural layout of bone?
The structural layout of bone can be classified in one of the following groups: either trabecular (cancellous or spongy) or compact. Histologically, spongy bone is comprised of anastomosing strips of slender bone known as trabeculae that enclose marrow and blood vessels. It forms the relatively softer core of the bones that is filled with marrow.