2nd_9-_test_1_pdf

Types of Tissue and Their Characteristics

  • Slide Types

    • Cross section: Cut perpendicular to the length of an organ.

  • Epithelial Tissue

    • Avascular: Lacks blood vessels, depends on diffusion for nutrient supply.

    • Many layers of flat, irregular shaped cells: Stratified squamous epithelium (ET).

    • Free surface: Characteristic of epithelial tissue.

    • Types of cells: Goblet cells produce mucous.

    • Columnar cells found near the basement membrane of the skin.

    • Lines the urinary bladder: Stratified transitional ET.

    • Simple squamous epithelium is involved in rapid transport of substances.

    • Transitional epithelium does not contain collagen fibers.

  • Muscle Tissue

    • Tissue in biceps: Skeletal muscle tissue, voluntary control.

    • Cardiac muscle found specifically in the heart; contains intercalated discs.

    • Involuntary, central nucleus, and no striations: Smooth muscle tissue.

    • Muscle cells: Muscle fibers.

  • Connective Tissue

    • Tissue making up tendons: Dense regular connective tissue.

    • Bone cells: Osteocytes.

    • Cells producing fibers: Fibroblasts.

    • Cartilage cells: Chondrocytes.

    • Fluid connective tissue cells: Red blood cells and white blood cells.

    • Most abundant and variable primary tissue type: Connective tissue.

    • Type with the densest matrix: Bone tissue.

    • Thick, long, and parallel fibers with great tensile strength: Collagen fibers.

    • Fibrocartilage: Made of collagen fibers and fibroblasts far apart.

    • Types of cartilage:

      • Hyaline cartilage found at the ends of long bones.

      • Elastic cartilage found in the ears.

  • Membranes

    • Four types of membranes:

      • Mucous

      • Cutaneous

      • Serous

      • Synovial

    • Mucous membrane: Produces mucous through goblet cells; thickest among membranes.

    • Serous membrane: Produces serous fluid, lines inner thoracic and abdominal cavities; thinnest of membranes.

    • Synovial membrane: Produces synovial fluid, found in joints; 2nd thickest of mucous, serous, and synovial.

    • Cutaneous membrane: Refers to the skin, an organ that covers the body.

    • Material lining between epithelium and its underlying connective tissue: Basement membrane.

Tissue Healing and Characteristics

  • Cartilage: Slow healing connective tissue due to lack of direct blood supply.