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. Clusters of cells arising from mitosis are called isogenous groups. They lie in spaces called lacunae with up to eight chondrocytes located in each. Chondrocytes rely on diffusion to obtain nutrients as, unlike bone, cartilage is avascular, meaning there are no vessels to carry blood to cartilage tissue.
This lack of blood supply causes cartilage to heal very slowly compared with bone. The base substance of cartilage is chondroitin sulfate, and the microarchitecture is substantially less organized than in bone. The cartilage fibrous sheath is called the perichondrium. The division of cells within cartilage occurs very slowly, and thus growth in cartilage is usually not based on an increase in size or mass of the cartilage itself.
Articular cartilage function is dependent on the molecular composition of its ECM, which consists mainly of proteoglycans and collagens. The remodeling of cartilage is predominantly affected by changes and rearrangements of the collagen matrix, which responds to tensile and compressive forces experienced by the cartilage. Cartilage types: Images of microscopic views of the different types of cartilage: elastic, hyaline, and fibrous.
There are three major types of cartilage: hyaline cartilage, fibrocartilage, and elastic cartilage. Hyaline cartilage is the most widespread cartilage type and, in adults, it forms the articular surfaces of long bones, the rib tips, the rings of the trachea, and parts of the skull. This type of cartilage is predominately collagen yet with few collagen fibers , and its name refers to its glassy appearance. In the embryo, bones form first as hyaline cartilage before ossifying as development progresses.
Hyaline cartilage is covered externally by a fibrous membrane, called the perichondrium, except at the articular ends of bones; it also occurs under the skin for instance, ears and nose.
Hyaline cartilage is found on many joint surfaces. It contains no nerves or blood vessels, and its structure is relatively simple. If a thin slice of cartilage is examined under the microscope, it will be found to consist of cells of a rounded or bluntly angular form, lying in groups of two or more in a granular or almost homogeneous matrix. These cells have generally straight outlines where they are in contact with each other, with the rest of their circumference rounded.
They consist of translucent protoplasm in which fine interlacing filaments and minute granules are sometimes present. Embedded in this are one or two round nuclei with the usual intranuclear network. Fibrous cartilage has lots of collagen fibers Type I and Type II , and it tends to grade into dense tendon and ligament tissue. It has a perichondrium. Cartilage: The three types of cartilage There are three types of cartilage: Hyaline - most common, found in the ribs, nose, larynx, trachea.
Is a precursor of bone. Fibro - is found in invertebral discs, joint capsules, ligaments. Elastic - is found in the external ear, epiglottis and larynx.
Hyaline cartilage This is a diagram of hyaline cartilage, showing active chondrocytes sitting in their lacunae. Difference between Hyaline and Elastic Cartilage is something that greatly aids with the proper functioning of the human body, each contributing in their own unique and individual ways.
Being both cartilage, Hyaline and Elastic cartilage greatly assist in the development of the fetus in the womb and is are essential to its correct and proper structuring of unformed bones.
Cartilage is a flexible type of connective tissue that is made up of cells called chondrocytes as well as from the materials that they secrete. The skeleton is first laid out in its form as cartilage, thereafter being replaced by the more solid structure of bones. The chondrocytes rely on a process of diffusion to obtain their needed nutrients.
Unlike bones, cartilage is avascular, meaning that is has no blood vessels for the transport of fresh blood to the cartilage. Due to this lack of blood supply, cartilage has a much longer healing process and time when compared to the healing time of bones. The base structure of cartilage when observed under a microscope, is vastly less organized that the structure of a bone, further complicating the healing time of cartilage. Of the three main cartilages found in the body, in adults, Hyaline cartilage is the most widespread.
Forming the articular surfaces of long bones, between the ribs, the rings of the trachea in the throat and some parts of the skull. Hyaline cartilage has been given its name due to its glossy appearance, and is predominantly made up of collagen, although it displays few collagen fibers.
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