CTB Epithelium Histology

    Cards (63)

    • What is the main learning objective (LO) of the CTB Epithelium Histology course?

      Identify and classify different types of epithelial tissues based on distinguishing structural characteristics.
    • What are the functions of epithelial tissues in the human body?

      Protection, secretion, absorption, digestion, and filtration.
    • What are the surface specializations that epithelial tissues may have?

      Microvilli and cilia.
    • How are epithelial tissues classified?

      • By the number of layers:
      • Simple: single layer
      • Stratified: more than one layer
      • Pseudostratified: appears layered but is not
      • By cell shape:
      • Squamous: flattened cells
      • Cuboidal: equal height and width
      • Columnar: taller than wide
    • What does "pseudostratified" mean in the context of epithelial tissue?

      Pseudostratified epithelium appears to have multiple layers but actually has all cells in contact with the basement membrane.
    • What type of epithelium is found lining the urinary bladder?
      Transitional epithelium.
    • What are the functions of different types of epithelial tissues based on their structure?

      • Stratified epithelium: provides physical protection and strength.
      • Simple epithelium: facilitates secretion and transport.
    • What is the role of the epithelium of the skin?

      It provides protection against physical and chemical damage and from pathogens.
    • What is the primary function of the digestive epithelium?

      It plays an important role in digestion and absorption.
    • What is the function of the epithelium of the olfactory mucosa?

      It is important for the ability to detect smell.
    • What is the role of the epithelium of the glomerulus?

      It is important in filtering blood to produce urine.
    • What are the characteristics of squamous epithelium?

      • Cells are thin and smooth on the free surface.
      • Found in areas requiring physical protection and strength.
    • Where is simple squamous epithelium typically found?

      In the lungs and lining of blood vessels.
    • Where is stratified squamous epithelium found?

      In the vagina and external layer of skin.
    • What is the structure of the basement membrane?

      • Separates the epithelium from underlying connective tissues.
      • Provides support and anchorage for epithelial cells.
    • What is the lamina propria?

      • A bed of connective tissue found in the digestive, respiratory, and urinary systems.
      • Often contains glands and blood vessels.
    • What is the mucosa?

      The combined epithelium, basement membrane, and lamina propria.
    • What are the characteristics of simple squamous epithelium?

      • Single layer of cells.
      • Facilitates rapid transport and secretion of large quantities of products.
    • What are the characteristics of stratified squamous epithelium?

      • More than one layer of flattened cells.
      • Protects underlying tissue.
    • Where is simple cuboidal epithelium found?

      In ducts and areas where secretion occurs in small glands.
    • Where is stratified cuboidal epithelium typically found?

      In salivary glands and sweat glands.
    • What are the characteristics of cuboidal epithelium?

      • Cube-like cells.
      • Centrally located, spherical, and large nuclei.
    • What is the primary function of simple cuboidal epithelium?

      Facilitates rapid transport and secretion of large quantities of products.
    • What is the primary function of stratified cuboidal epithelium?

      Protects underlying tissue.
    • What are the characteristics of columnar epithelium?

      • Columnar in shape.
      • May be ciliated or smooth.
      • Nuclei are elongated.
    • Where is simple columnar epithelium found?

      In the digestive tract.
    • Where is pseudostratified columnar epithelium typically found?

      In the respiratory tract.
    • What is the role of goblet cells in columnar epithelium?

      They are mucus-secreting cells that help trap harmful particles.
    • What are the functions of microvilli in epithelial cells?

      • Short cellular projections on the apical surface.
      • Increase surface area for absorption and digestion.
    • What is the significance of cilia in pseudostratified columnar epithelium?

      • Cilia help sweep away dust and harmful particles from the respiratory tract.
      • They work in conjunction with goblet cells to trap and remove debris.
    • What is the primary function of goblet cells?

      To produce mucous that traps harmful particles
    • Where is simple columnar epithelium primarily found?

      In locations where secretion and absorption are primary functions, such as the digestive tract
    • What is the primary function of pseudostratified columnar epithelium?

      Secretion and protection
    • Where is stratified columnar epithelium found?

      In small amounts in the male urethra, conjunctiva of the eye, and some glands
    • What is the function of microvilli in simple columnar epithelial cells?

      To increase surface area for absorption and digestion
    • What do microvilli form on the surface of epithelial cells?

      The 'brush border'
    • What is keratin and where is it found?
      Keratin is a tough, fibrous protein found in the skin
    • What is the role of stereocilia in the epididymis?

      To sense movement in passing fluids and convert physical signals to nerve impulses
    • Where are cilia primarily found?

      In the trachea
    • What is the primary function of cilia?

      To facilitate fluid movement across the epithelium
    See similar decks