Cartilage is a resilient and smooth elastic tissue, a rubberlike padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components. The three types of cartilage there are three types of cartilage. In the embryo, it serves as a temporary skeleton until it is gradually replaced by bone. The muscularis externa contains cartilage in the epiglottis, larynx, trachea, and bronchi. It forms the articulating surfaces of bones in synovial joints, where it provides a smooth, frictionfree surface at which movements occur, and it acts as a shock absorber. Hyaline cartilage this is an audio histology slide. Note the numerous chondrocytes in this image, each located within lacunae and surrounded by the cartilage they have produced. It is the most common cartilage and is found on articular surfaces of bone, walls of the respiratory system trachea and. Difference between fibrocartilage and hyaline cartilage. Cartilage support of other tissues throughout the respiratory tract is also prominent. In routine histology preparations, the proteoglycans make the matrix generally basophilic and the thin collagen fibrils are not visible. Click on the button below the histology image and you will hear me give a brief description of the histology slide. Cartilage junqueiras basic histology, 14e accessmedicine. With the help of synovial fluid, it provides a smooth articulating surface in all synovial joints.
Sep 18, 2017 fibrocartilage, hyaline cartilage, and elastic cartilage are the three types of cartilage that are found in the human body. Under a highpower microscope the matrix can be seen to consist of a dense network of very fine collagen fibrils and fibres embedded in proteoglycan gel williams et al 1995. Histology chapter 7 cartilage and bone flashcards quizlet. Conklin department of anatomy, the university of michigan medical school, ann arbor, michigan despite numerous attempts to develop and evalute specsc methods for the histo chemical demonstration of mucopolysac charides, definitive information is not readily available. Hyaline cartilage, also called articular cartilage. This gives hyaline cartilage its viscous characteristic and reduces friction. Most of the skeleton is preformed in hyaline cartilage. Hyaline cartilage hyaline cartilage, human anatomy and. Hyaline cartilage is found mainly in association with the skeletal system, as articular cartilage, costal cartilage or growth plate, though it does also occur in extraskeletal sites, such as the larynx, trachea, bronchi and nose. Hyaline cartilage has a pearly bluishwhite tinge and under a lowpower microscope the matrix appears amorphous and translucent semitransparent as in figure 4. Most of the collagen in hyaline cartilage is type ii. How it is diagnosed this damage cannot be seen on an xray because hyaline cartilage is a soft tissue. These slides are good examples of mature hyaline cartilage with its abundant matrix and spaces, lacunae, occupied by cells, chrondocytes, which usually shrink extensively during fixation.
Cartilages are a type of connective tissue that is made up of chondrocytes and an extracellular matrix. Hyaline cartilage is a type of connective tissue found in areas such as the nose, ears, and trachea of the human body. Hyaline cartilage is the glasslike hyaline but translucent cartilage found on many joint surfaces. It can be divided into hyaline cartilage, elastic cartilage, and. Cartilage engineering is a strategic experimental goal for the treatment of multiple joint diseases. This section comes from cartilage in a developing fetal bone. Hyaline cartilage contains type ii collagen fibers and a highlyhydrated ground substance. Hyaline cartilage definition of hyaline cartilage by. Hyaline cartilage, the most abundant type of cartilage, plays a supportive role and assists in movement. Fibrocartilage is a support and binding tissue with strong shockabsorbing capabilities. In adults, hyaline cartilage is located in the articular surfaces of movable joints, in the walls of the respiratory tracts nose, larynx, trachea, and bronchi, in the costal cartilages, and in the. Hyaline cartilage definition is translucent bluishwhite cartilage with the cells embedded in an apparently homogeneous matrix present in joints and respiratory passages and forming most of the fetal skeleton. Pdf chondrocalcinosis of the hyaline cartilage of the.
This is a section of hyaline cartilage, the most abundant type of cartilage in the body. The cartilage maintains its metabolic needs instead from synovial fluid from synovial membrane connective tissue which looks like an epithelium but is a connective tissue layer. This makes fibers hard to see in hyaline cartilage. Hyaline cartilage is the most widespread and is the type that makes up the embryonic skeleton. Cartilage ecm has a firm consistency that allows the tissue to bear. These cells have relatively small nuclei and often. Hyaline cartilage, the most common type of cartilage, is composed of type ii collagen and chondromucoprotein and often has a glassy appearance. The cartilage holds the respiratory passageways open during inhalation and exhalation. Dense connective tissue of perichondrium is shown here with hyaline and elastic cartilage. Chondrocalcinosis of the hyaline cartilage of the knee. The three types of cartilage include hyaline, elastic, and fibrocartilage. Hyaline cartilage injury baptist health south florida. It functions as a shock absorber and is found lining a joint in the synovial cavity. Fibro is found in invertebral discs, joint capsules, ligaments elastic is found in the external ear, epiglottis and larynx.
This rapidly growing tissue forms the majority of the fetal skeleton and remains into adulthood as the smooth joint surfaces at the. Hyaline cartilage is pearlgrey in color, with a firm consistency and has a considerable amount of collagen. Cartilage types cartilage exists in the body as three types. A gag with no protein core that is found in the matrix of hyaline cartilage. Download premium images you cant get anywhere else. May 11, 2020 cartilage is a flexible connective tissue found in multiple areas of the body, including joints, the ear and nose, and intervertebral discs.
It is the most common cartilage and is found on articular surfaces of bone, walls of the respiratory system trachea and bronchi, and epiphyseal plates. Based on the process of embryonic chondrogenesis, we hypothesized that cartilage could be engineered by condensing chondrocytes in pellet culture and, in the present study, examined the quality of regenerated cartilage in direct comparison with native cartilage. It is also most commonly found in the ribs, nose, larynx, and trachea. Hyaline cartilage develops, like other types of connective tissue, from mesenchymal cells. Pdf chondrocalcinosis of the hyaline cartilage of the knee. Articular hyaline cartilage and fibrocartilage do not have a perichondrium. It has no perichondrium so cannot go through appositional growth. Due to a high proportion of elastic fibres and lamellae, this type of cartilage is yellowish in colour in the fresh state. It is not as hard and rigid as bone, but it is much stiffer and much less flexible than muscle.
Slide trachea hyaline cartilage is the most common type of cartilage. May 25, 2020 hyaline cartilage is the most common of the three types of carticlage. The photomicrographs show the main features of b hyaline cartilage, c elastic cartilage, and d fibrocartilage. The cartilageforming cells, chondroblasts, begin to secrete the components of the extracellular matrix of cartilage. The dry weight of hyaline cartilage is nearly 40% collagen embedded in a firm, hydrated gel of proteoglycans and structural glycoproteins. Pdf academic prepared within the scope of mevlana exchange programme. In its fresh state, it is homogeneous and semitransparent. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
Mri manifestations article pdf available in skeletal radiology 277. Chondrocytes may lie singly or in pairs, but most often they form short rows between dense bundles of collagen fibres. Gradually replaced by bone in grown ups except at the articular. Oct 28, 2014 a read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. This is a section of fibrocartilage from the quadriceps tendon near its junction with the patella. Costal cartilage is composed of what type of cartilage. There are three types of adult cartilage distributed in many areas of the skeleton, particularly in joints and where pliable support is useful, as in the ribs, ears, and nose. Hyaline cartilage is named for its glassy appearance, and with a few exceptions occurs at the articular surfaces of most bones see section on fibrocartilage for exceptions, the ventral parts of the ribs, the cartilages of the trachea, the first few bronchi in the rat and in some laryngeal cartilages fig.
Hyaline cartilage definition of hyaline cartilage by the. From about the fifth foetal week precursor cells become rounded and form densely packed cellular masses, chondrification centres. In the fetus, the skeleton is completely made up of cartilage. The word hyaline means glasslike, and hyaline cartilage is a glossy, greyishwhite tissue with a uniform appearance. Hyaline cartilage also aids respiration by providing rigidity in the larynx, trachea and. Junqueiras basic histology text and atlas, 12th edition download pdf ossification part 2 in this video we talk about ossification endochondral and intramembranous, bone formation and also view and analyse the. Composed of cells chondrocytes and an extracellular matrix composed of fibers and ground substance. Cartilage part 2 in this video we focus on the hyaline and elastic cartilage as well as the fibrocartilage. Hyaline cartilage figure 72 is the most common and best studied of the three forms. As the name suggests, a high proportion of collagen fibres characterises this. Fibro is found in invertebral discs, joint capsules, ligaments. Hyaline cartilage connective tissue, right now may be thinking that this subject is very simple, and in all reality it is although some parts are complex and were difficult to learn at first. Trachea, monkey, 2 m tbaf aperio imagescope aperio webscope note the general organization of hyaline cartilage.
Hyaline cartilage stock pictures, royaltyfree photos. Hyaline cartilage is present in a wide range of locations and is important in resisting forces and in supporting soft tissues. This cartilage is a modified, more organized version of hyaline cartilage. In adults, hyaline cartilage is located in the articular surfaces of movable joints, in the walls of the respiratory tracts nose, larynx, trachea, and bronchi, in the costal cartilages, and in the epiphyseal. It persists in human adults at the ends of bones in freemoving joints as articular cartilage, at the ends of the ribs, and in the nose, larynx, trachea, and. Because of this, damaged cartilage heals poorly after injury. This strong cartilage is much more thickly embedded with collagen than is hyaline cartilage.
Hyaline cartilage engineered by chondrocytes in pellet. In part i, there are four slides to examine, showing hyaline cartilage webslide 8, elastic cartilage webslide 12, and fibrocartilage webslides 45 and 74. How it is treated because cartilage does not heal itself well, doctors have developed. Cartilage is a specialized form of connective tissue. Cartilage support of other tissues throughout the respiratory system is also prominent. Dec 20, 2010 areas found cartilage occurence hyaline cartilage epiphysial growth plate, ribs, respiratory tract, articular cartilage elastic cartilage pinna, epiglottis, external auditory meatus, arytenoid corniculate, cuneiform cartilage. See more ideas about hyaline cartilage, histology slides and anatomy and physiology. Find highquality hyaline cartilage stock photos and editorial news pictures from getty images. Damaged cartilage can also lead to arthritis in the joint. They are thinner than the more familiar fibres made of type i collagen, and cannot be seen in conventional histological sections. Fresh hyaline cartilage is bluishwhite and translucent. Which type of cartilage is found in the external ear. Type anatomy skin anatomy anatomy study hyaline cartilage histology slides pediatric nurse practitioner tissue types medicine notes nursing school notes difference between difference between hyaline and elastic cartilage is something that greatly aids with the proper functioning of the human body, each contributing in their own.