How are chondrocytes arranged in hyaline cartilage?
When arranged in groups of two or more, the chondrocytes have rounded, but generally straight outlines; where they are in contact with each other, and in the rest of their circumference, they are rounded. They consist of translucent protoplasm with fine interlacing filaments and minute granules are sometimes present.
What is the arrangement of chondrocytes?
In the middle zone, chondrocytes are larger and more rounded and display a random distribution, in which the collagen fibers also are more randomly arranged. In the deeper zones, chondrocytes form columns that are oriented perpendicular to the cartilage surface, along with the collagen fibers.
Where are chondrocytes located in hyaline cartilage?
lacunae
Hyaline cartilage is the most common type of cartilage. Find the surrounding capsule-like perichondrium . The chondrocytes , shrunken with tissue preparation, are located within lacunae . The area immediately adjacent to the cell is called the capsule and stains intensely because of the rich glycosaminoglycan content.
What is the arrangement of chondrocytes in fibrocartilage?
Chondrocytes are thinly dispersed in the matrix and are arranged in short, parallel rows between collagen fiber bundles. In contrast to hyaline cartilage, with type II collagen in its matrix, fibrocartilage is composed oftype I collagen.
What is composed of hyaline cartilage?
Hyaline cartilage is the most widespread and is the type that makes up the embryonic skeleton. It persists in human adults at the ends of bones in free-moving joints as articular cartilage, at the ends of the ribs, and in the nose, larynx, trachea, and bronchi.
How does the structure of hyaline cartilage relate to its function?
Hyaline cartilage is high in collagen, a protein that is found not only in connective tissue but also in skin and bones, and helps hold the body together. Hyaline cartilage provides support and flexibility to different parts of the body.
What is elastic cartilage?
Elastic cartilage is a structural cartilaginous tissue for non-load-bearing body parts, such as ears, nose, and epiglottis (Hutmacher et al., 2003). From: Nanocomposites for Musculoskeletal Tissue Regeneration, 2016.
What chambers are osteocytes are found?
osteocyte, a cell that lies within the substance of fully formed bone. It occupies a small chamber called a lacuna, which is contained in the calcified matrix of bone.
What is hyaline cartilage composed of?
Hyaline cartilage is found in the synovial joints and assists the motion of joints. It is composed of chondrocytes and extracellular matrix.
Where is lacuna found?
Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.
Is cartilage innervated?
Cartilage has no nerve innervation, and hence there is no sensation when it is injured or damaged. When there is calcification of cartilage, the chondrocytes die. This is followed by the replacement of cartilage with bone-like tissue. Unlike bone, cartilage does not have calcium in the matrix.
What is the difference between hyaline cartilage and fibrocartilage?
The main difference between fibrocartilage and hyaline cartilage is that fibrocartilage is stiff and contains many collagen fibers whereas hyaline cartilage is a soft cartilage that contains fewer fibers.
Where are chondrocytes found in the hyaline cartilage?
Chondrocytes occupy relatively little of the hyaline cartilage mass. They are embedded in an extensive matrix and are located in matrix cavities known as lacunae, which appear as tiny white lakes under a light microscope. Chondrocytes are important in synthesizing and maintaining components of the ECM.
Where is the hyaline cartilage in the trachea?
The hyaline cartilage in the trachea is in the middle of the tracheal wall. It tends to stain more blue than other kinds of connective tissue (however, remember that color should never be the main cue you use to identify a tissue). The bar shows the position of the hyaline cartilage.
What are the histologic characteristics of hyaline cartilage?
Hyaline cartilage histology 1 Matrix. The extracellular matrix (ECM) of hyaline cartilage is homogeneous and glassy, rich in in type II collagen, proteoglycans such as aggrecan, and structural glycoproteins such as chondronectin. 2 Chondrocytes. Chondrocytes occupy relatively little of the hyaline cartilage mass. 3 Perichondrium.
How does the chondrocyte maintain homeostasis in cartilage?
AC development, growth, maintenance, and repair are controlled by several signaling factors that trigger multiple bioactive roles within the chondrocyte metabolism. The regulatory mechanisms of the growth factors are responsible for cartilage homeostasis. An imbalance between them is often noticed in OA cartilage.