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Introduction to Connective Tissue Proper quiz #1

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  • What are the main differences between loose and dense connective tissue proper in terms of their protein fiber arrangement and ground substance?
    Loose connective tissue has loosely spaced protein fibers with a large amount of ground substance, while dense connective tissue has densely packed protein fibers with less ground substance.
  • Describe the three types of protein fibers found in connective tissue proper and their main characteristics.
    Collagen fibers are long, unbranched, and strong, providing strength with some flexibility; reticular fibers are net-like and branched, offering multi-directional strength; elastic fibers are branched, wavy, and made of elastin, allowing for extensive stretching and return to original shape.
  • What are the two main categories of cells found in connective tissue proper, and what are their primary functions?
    The two main categories are fixed (resident) cells, which include fibroblasts, fibrocytes, and adipocytes that build, maintain, or store fat in the extracellular matrix, and migratory cells, such as macrophages and mast cells, which are immune cells that protect against infection.
  • Why is connective tissue proper sometimes referred to as fibrous or general connective tissue?
    It is called fibrous connective tissue because it is rich in protein fibers that are easily seen under a microscope, and general connective tissue because it performs generalized functions across multiple body systems.
  • What roles do fibroblasts and fibrocytes play in connective tissue proper?
    Fibroblasts are active, immature cells that build and secrete components of the extracellular matrix, while fibrocytes are mature cells that maintain the matrix with minor repairs and can revert to fibroblasts if needed for tissue repair.
  • What is the main difference in the arrangement of protein fibers and ground substance between loose and dense connective tissue proper?
    Loose connective tissue has loosely spaced protein fibers with a large amount of ground substance, while dense connective tissue has densely packed protein fibers with less ground substance.
  • What are the three types of protein fibers found in connective tissue proper and what are their main characteristics?
    Collagen fibers are long, unbranched, and strong; reticular fibers are net-like and branched, providing multi-directional strength; elastic fibers are branched, wavy, and made of elastin, allowing for extensive stretching and return to original shape.
  • What are the two main categories of cells found in connective tissue proper and what are their primary functions?
    Fixed (resident) cells like fibroblasts, fibrocytes, and adipocytes build, maintain, or store fat in the extracellular matrix, while migratory cells such as macrophages and mast cells are immune cells that protect against infection.
  • Why is connective tissue proper sometimes called fibrous or general connective tissue?
    It is called fibrous connective tissue because it is rich in protein fibers that are easily seen under a microscope, and general connective tissue because it performs generalized functions across multiple body systems.
  • What roles do fibroblasts and fibrocytes play in connective tissue proper?
    Fibroblasts are active, immature cells that build and secrete components of the extracellular matrix, while fibrocytes are mature cells that maintain the matrix with minor repairs and can revert to fibroblasts if needed for tissue repair.
  • What structure attaches muscle to bone in the human body?
    Tendons attach muscle to bone. Tendons are composed of dense connective tissue proper, which is rich in collagen fibers that provide strength.
  • Which type of connective tissue connects muscle to bone?
    Dense connective tissue proper forms tendons, which connect muscle to bone.
  • What tissue does muscle attach to via tendons?
    Muscle attaches to bone via tendons, which are made of dense connective tissue proper.
  • What is the name of the connective tissue structure that connects bone to muscle?
    The connective tissue structure that connects bone to muscle is called a tendon, which is composed primarily of dense connective tissue proper rich in collagen fibers.