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What is the main component of the extracellular matrix of hyaline cartilage?

  • Type II collagen fibers (correct)
  • Type I collagen fibers
  • Elastic fibers
  • Chondrocytes

    • Why is cartilage limited in thickness?

  • Due to presence of elastic fibers
  • Due to avascularity
  • Due to lack of chondrocytes
  • Due to nourishment by diffusion (correct)

    • Which type of cartilage contains abundant elastic fibers in its extracellular matrix?

  • Elastic cartilage (correct)
  • Chondrocyte-rich cartilage
  • Fibrocartilage
  • Hyaline cartilage

    • In postnatal life, where is cartilage less abundant but still essential?

    <p>On the articular surfaces of the long bones</p> Signup and view all the answers

    What is the main function of the capsule mentioned in the text?

    <p>To protect the chondrocytes from tension and compression movements</p> Signup and view all the answers

    Where is fibrocartilage mainly found?

    <p>In intervertebral discs and linking muscles in the dog heart</p> Signup and view all the answers

    What is the most significant characteristic of elastic cartilage?

    <p>It has a dense network of elastic fibers</p> Signup and view all the answers

    How is the nutrition of the cartilage carried out?

    <p>By diffusion through the capillaries of the perichondrium</p> Signup and view all the answers

    Which type of growth involves the differentiation of the perichondrium into chondroblasts?

    <p>Appositional growth</p> Signup and view all the answers

    What are the main constituents of the extracellular matrix of hyaline cartilage?

    <p>Type II collagen and proteoglycans</p> Signup and view all the answers

    Where are chondrocytes found in mature hyaline cartilage?

    <p>Lacunae</p> Signup and view all the answers

    What do proteoglycan complexes provide in the cartilaginous matrix?

    <p>Hydration</p> Signup and view all the answers

    What is the composition of the fibrous layer of the perichondrium?

    <p>Type I collagen fibers and fibroblasts</p> Signup and view all the answers

    What is the main source of origin for hyaline cartilage?

    <p>Mesoderm</p> Signup and view all the answers

    What is the main staining characteristic of the cartilaginous matrix?

    <p>Basophilic</p> Signup and view all the answers

    What is the function of the territorial matrix in hyaline cartilage?

    <p>Maintains tissue shape</p> Signup and view all the answers

    What is the main role of chondrocytes in mature hyaline cartilage?

    <p>Secrete ground substance</p> Signup and view all the answers

    What is the primary component of the chondrogenic layer of the perichondrium?

    <p>Chondrocytes</p> Signup and view all the answers

    Where are chondrocytes located in hyaline cartilage?

    <p>Lacunae</p> Signup and view all the answers

    What is the primary characteristic of chondrocytes in mature hyaline cartilage?

    <p>Small and round nucleus</p> Signup and view all the answers

    Which type of cartilage has a dense network of elastic fibers and presents more and larger chondrocytes than hyaline cartilage?

    <p>Elastic cartilage</p> Signup and view all the answers

    Where is fibrocartilage primarily found?

    <p>Intervertebral discs</p> Signup and view all the answers

    How is the nutrition of the cartilage carried out?

    <p>By diffusion through the capillaries of the perichondrium</p> Signup and view all the answers

    What is the most significant characteristic of fibrocartilage?

    <p>Presence of type I collagen mixed with areas of hyaline cartilage</p> Signup and view all the answers

    What is the function of the capsule mentioned in the text?

    <p>Protective function for the chondrocytes</p> Signup and view all the answers

    Which type of cartilage lacks a perichondrium?

    <p>Fibrocartilage</p> Signup and view all the answers

    Where are chondrocytes arranged in rows?

    <p>Fibrocartilage</p> Signup and view all the answers

    Which type of cartilage contains a dense network of elastic fibers?

    <p>Elastic cartilage</p> Signup and view all the answers

    Where is fibrocartilage less frequent and mainly found?

    <p>Intervertebral discs</p> Signup and view all the answers

    Which type of cartilage presents more and larger chondrocytes than hyaline cartilage?

    <p>Elastic cartilage</p> Signup and view all the answers

    Which type of cartilage is found in areas where elasticity and a certain rigidity are needed, such as the ear and the larynx?

    <p>Elastic cartilage</p> Signup and view all the answers

    Which type of cartilage is less frequent and is mainly found in the intervertebral discs and the heart of dogs?

    <p>Fibrocartilage</p> Signup and view all the answers

    Which type of cartilage lacks a perichondrium and presents great resistance to traction and compression forces?

    <p>Fibrocartilage</p> Signup and view all the answers

    Where is the nutrition of the cartilage carried out by diffusion through the capillaries of the perichondrium?

    <p>Hyaline cartilage</p> Signup and view all the answers

    Which type of cartilage contains a dense network of elastic fibers and more and larger chondrocytes than hyaline cartilage?

    <p>Elastic cartilage</p> Signup and view all the answers

    True or false: Elastic cartilage is found in areas where elasticity and rigidity are not needed, such as the inner ear and the larynx.

    <p>False</p> Signup and view all the answers

    True or false: Fibrocartilage lacks a perichondrium.

    <p>True</p> Signup and view all the answers

    True or false: Hyaline cartilage presents more and larger chondrocytes than elastic cartilage.

    <p>False</p> Signup and view all the answers

    True or false: The nutrition of the cartilage is carried out by diffusion through the capillaries of the perichondrium.

    <p>True</p> Signup and view all the answers

    True or false: Fibrocartilage presents great resistance to traction and compression forces.

    <p>True</p> Signup and view all the answers

    Match the following types of cartilage with their characteristics:

    <p>Hyaline cartilage = More and larger chondrocytes, predominant type of cartilage in the body Elastic cartilage = Dense network of elastic fibers, found in areas requiring elasticity and rigidity Fibrocartilage = Presence of type I collagen, great resistance to traction and compression forces Perichondrium = Provides nutrition to cartilage through diffusion, lacks in fibrocartilage</p> Signup and view all the answers

    Match the following characteristics with their corresponding type of cartilage:

    <p>Presence of type I collagen mixed with areas of hyaline cartilage = Fibrocartilage Found in areas where elasticity and rigidity are needed = Elastic cartilage Lacks a perichondrium = Fibrocartilage Provides diffusion-based nutrition to cartilage = Perichondrium</p> Signup and view all the answers

    Match the following locations with the type of cartilage found in them:

    <p>Ear, inner ear, larynx = Elastic cartilage Intervertebral discs, heart of dogs = Fibrocartilage Areas requiring elasticity and rigidity = Elastic cartilage Mainly found in the body = Hyaline cartilage</p> Signup and view all the answers

    Match the following components with the type of cartilage they are associated with:

    <p>Dense network of elastic fibers = Elastic cartilage More and larger chondrocytes = Hyaline cartilage Presence of type I collagen = Fibrocartilage Provides diffusion-based nutrition = Perichondrium</p> Signup and view all the answers

    Match the following characteristics with the type of cartilage they represent:

    <p>Great resistance to traction and compression forces = Fibrocartilage Predominant type of cartilage in the body = Hyaline cartilage Found in areas requiring elasticity and rigidity = Elastic cartilage Lacks a perichondrium = Fibrocartilage</p> Signup and view all the answers

    ELASTIC CARTILAGE

    <p>Areas where elasticity and a certain rigidity are needed, such as the ear, the inner ear and the epiglottic, cuneiform and corniculate cartilages of the larynx</p> Signup and view all the answers

    FIBROCARTILAGE

    <p>Less frequent and found mainly in the intervertebral discs. Also found in the muscles that make up the atria and ventricles of the dog heart</p> Signup and view all the answers

    ELASTIC CARTILAGE

    <p>More and larger chondrocytes and less abundant matrix than hyaline cartilage</p> Signup and view all the answers

    ELASTIC CARTILAGE

    <p>Dense network of elastic fibers</p> Signup and view all the answers

    FIBROCARTILAGE

    <p>Muscles that make up the atria and ventricles of the dog heart are linked by</p> Signup and view all the answers

    Study Notes

    Hyaline Cartilage Structure and Growth

    • Hyaline cartilage is found in adult articular surfaces of bones, trachea, bronchi, ribs, bones of the nose, and the embryo's skeleton.
    • It originates from mesenchymal connective tissue and forms from clusters of undifferentiated mesenchymal cells.
    • Cartilage growth occurs through interstitial growth, where chondrocytes divide and secrete new ground substance and collagen fibers, and appositional growth, where the perichondrium differentiates into chondroblasts.
    • The perichondrium has two layers: the chondrogenic layer, composed of chondroblasts, and the fibrous layer, made up of type I collagen fibers and fibroblasts.
    • Hyaline cartilage is externally surrounded by the perichondrium.
    • Chondrocytes in mature hyaline cartilage vary in size and are found in lacunae called chondroplasts, which may contain 1, 2, 4, or 6 chondrocytes.
    • The main constituents of the extracellular matrix of hyaline cartilage are type II collagen and proteoglycans, which provide tissue shape and resist tensile and compressive forces.
    • Different patterns of collagen distribution in the cartilaginous matrix suggest fiber orientation to resist stress.
    • Proteoglycan complexes occupy the interstices of the collagen fibril network and provide a hydrated viscous gel that absorbs compressive forces.
    • The cartilaginous matrix is basophilic, PAS+, and metachromatic, and includes territorial and interterritorial matrices.
    • Chondrocytes have a spherical nucleus with one or more nucleoli and an abundance of rough endoplasmic reticulum and Golgi complex.
    • Active chondrocytes fill lacunae, while old chondrocytes accumulate glycogen and lipids and appear vacuolized in slides.

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    Lesson 8 - Cartilage Notes PDF

    Description

    Test your knowledge of hyaline cartilage structure and growth with this quiz. Explore the key components of hyaline cartilage, its growth processes, and the characteristics of chondrocytes.

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