Histology of Bone and Cartilaginous Tissues
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Questions and Answers

What is the main function of cartilage in the skeleton?

  • To facilitate the development of nervous tissue
  • To provide mechanical and protective roles within the skeleton (correct)
  • To store nutrients and energy for the body
  • To provide a framework for muscles to attach
  • What is the main component of the cartilage matrix that provides its shock-absorbing properties?

  • Type II collagen
  • Sulfated GAGs on proteoglycans (correct)
  • Hyaluronan
  • Type I collagen
  • What surrounds the cartilage and provides a vascular interface?

  • Synovial fluid
  • Hyaline cartilage
  • Elastic cartilage
  • Perichondrium (correct)
  • What is the primary function of chondrocytes in cartilage?

    <p>To synthesize and maintain all ECM components</p> Signup and view all the answers

    What is the characteristic of cartilage that allows it to guide the development and growth of long bones?

    <p>High concentration of GAGs and proteoglycans</p> Signup and view all the answers

    What is the function of the perichondrium in relation to the cartilage?

    <p>To interface between the cartilage and the tissues supported by it</p> Signup and view all the answers

    What is the characteristic of cartilage that allows it to provide cushioning and low-friction surfaces in joints?

    <p>High concentration of GAGs and proteoglycans</p> Signup and view all the answers

    What is the type of cartilage that lacks perichondrium and is sustained by the synovial fluid?

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

    Study Notes

    Cartilage Tissue

    • Tough, durable form of supporting connective tissue
    • Composed of high concentrations of GAGs and proteoglycans in the ECM
    • Supports softer tissues in the respiratory tract, ears, and nose
    • Has mechanical and protective roles within the skeleton
    • Provides cushioning and low-friction surfaces in joints
    • Guides development and growth of long bones

    Structure of Cartilage Matrix and Cells

    • Chondrocytes make up a small percentage of the cartilage mass
    • Chondrocytes are located in matrix cavities (lacunae)
    • Chondrocytes synthesise and maintain all ECM components
    • Physical properties of cartilage depend on bonds between type II collagen, hyaluronan, and sulfated GAGs on proteoglycans
    • High content of bound water enables shock absorption

    Characteristics of Cartilage

    • Lacks blood vessels, lymphatics, and nerves
    • Surrounded by dense vascularised connective tissue (perichondrium)
    • Chondrocytes receive nutrients by diffusion from capillaries in the perichondrium
    • Perichondrium acts as an interface between the cartilage and supported tissues
    • Articular cartilage lacks perichondrium and is sustained by the synovial fluid

    Types of Cartilage

    • Hyaline cartilage
    • Elastic cartilage

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    Description

    Learn about the main features, histological structure, and functions of bone and cartilaginous tissues, including types of cartilage and bone, and their mechanisms.

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