2-L1
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Questions and Answers

What is the main function of basement membranes in epithelial tissues?

  • Secreting mucus for protection
  • Providing structural support and polarity to epithelial cells (correct)
  • Regulating cell migration along epithelia
  • Transporting substances from the epithelium to the connective tissue
  • Which type of epithelium is responsible for protecting underlying tissue from wear?

  • Stratified epithelium (correct)
  • Pseudostratified epithelium
  • Columnar epithelium
  • Simple squamous epithelium
  • Why is pseudostratified epithelium called pseudostratified?

  • Because it secretes mucus for protection
  • Because only some cells reach the surface, giving the appearance of multiple layers (correct)
  • Because it has multiple layers of cells
  • Because it is found in multiple locations in the body
  • What is the role of cilia in simple columnar epithelium?

    <p>To help move substances along the surface</p> Signup and view all the answers

    What is the function of proteins in the basement membrane of epithelial cells?

    <p>Helping organize proteins in the plasma membrane of epithelial cells</p> Signup and view all the answers

    Which type of epithelial tissue allows for diffusion, filtration, secretion, and absorption to occur?

    <p>Simple squamous epithelium</p> Signup and view all the answers

    What role do basal lamina components play in epithelial tissues?

    <p>Mediating cell-to-cell interactions and marking routes for cell migrations</p> Signup and view all the answers

    What is the main feature of epithelial tissue in terms of cell arrangement?

    <p>Closely packed cells with little extracellular material</p> Signup and view all the answers

    Where is the apical surface of epithelial cells typically located?

    <p>Facing the body cavity or lining of internal organs</p> Signup and view all the answers

    How do epithelia adhere to nearby connective tissue?

    <p>Via a basement membrane</p> Signup and view all the answers

    Why do epithelia have a high capacity for renewal?

    <p>Since they are subjected to wear and tear</p> Signup and view all the answers

    What type of tissue do most epithelia rest on?

    <p>Connective tissue</p> Signup and view all the answers

    How is the area of contact between epithelium and connective tissue increased?

    <p>Via irregularities at the interface known as papillae</p> Signup and view all the answers

    What is the role of the basement membrane in epithelial tissues?

    <p>To attach epithelium firmly to nearby connective tissue</p> Signup and view all the answers

    Where are ciliated rectangular cells typically found?

    <p>Kidney tubules</p> Signup and view all the answers

    What is the main function of ciliated rectangular cells?

    <p>Aids in movement</p> Signup and view all the answers

    Which type of epithelial tissue is capable of renewal at a high rate?

    <p>Epithelial tissue</p> Signup and view all the answers

    What is the main function of epithelial cells with a flattened disk-shaped nucleus?

    <p>Aid in diffusion</p> Signup and view all the answers

    What distinguishes pseudostratified epithelia from other epithelial tissues?

    <p>Presence of multiple layers</p> Signup and view all the answers

    What feature do ependymal cells in the brain ventricle and spinal cord have?

    <p>Secrete mucus</p> Signup and view all the answers

    Which structure is electron-dense, 20-100 nm thick, and consists of a network of fine fibrils?

    <p>Basal lamina</p> Signup and view all the answers

    Where is the reticular lamina located in relation to the basal lamina?

    <p>Beneath the basal lamina</p> Signup and view all the answers

    Which organ does not typically contain ciliated rectangular cells?

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

    Which type of epithelium has cells that are cubelike in shape?

    <p>Simple cuboidal epithelium</p> Signup and view all the answers

    What differentiates simple columnar epithelium from pseudostratified epithelia?

    <p>Nuclei arrangement</p> Signup and view all the answers

    What type of epithelium has cells with about the same height and width and a spherical nucleus?

    <p>Ciliated simple columnar epithelium</p> Signup and view all the answers

    Which structure binds the basal surface of epithelial cells to the basal lamina?

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

    In which location can you find mesothelium in the body?

    <p>Lining of body cavities</p> Signup and view all the answers

    What is the term used to describe an increase in the rate of cell division?

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

    In compensatory reactions, if one kidney is removed, what happens to the other kidney?

    <p>It increases in size</p> Signup and view all the answers

    What happens to the number of filtration units during aging hyperplasia?

    <p>It remains the same</p> Signup and view all the answers

    Which type of epithelium is characterized by a single layer of nonciliated rectangular cells?

    <p>Non-ciliated simple columnar epithelium</p> Signup and view all the answers

    Where is non-ciliated simple columnar epithelium found in the body?

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

    What function does non-ciliated simple columnar epithelium perform?

    <p>Absorption and secretion</p> Signup and view all the answers

    Which organ(s) belong to the male reproductive tract and contain non-ciliated simple columnar epithelium?

    <p>Seminal vesicles and Epididymis</p> Signup and view all the answers

    What characteristic enables abnormal growth (cancer) cells to detach easily from a tumor and spread to other parts of the body?

    <p>Altered adhesive properties</p> Signup and view all the answers

    What term describes the process where cancer cells spread to other parts of the body?

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

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