Histology Lecture 2 p1
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Questions and Answers

What is the function of the basal lamina for epithelial cells?

  • It serves as a barrier to protect the cells
  • It contains receptors for bloodborne factors (correct)
  • It generates energy for cellular processes
  • It provides nutrients to the cells
  • How do epithelial cells repair themselves after damage?

  • By forming new cells through mitosis (correct)
  • Via a process known as diffusion
  • By producing antibodies
  • By releasing signaling molecules
  • What type of collagen fibers make up the reticular lamina?

  • Type III collagen fibers (correct)
  • Type IV collagen fibers
  • Type I collagen fibers
  • Type II collagen fibers
  • Why does the basal surface of epithelial cells often contain receptors for bloodborne factors?

    <p>Because it is closest to the blood supply</p> Signup and view all the answers

    Where are tight junctions located in relation to epithelial cells?

    <p>Immediately beneath the luminal surface</p> Signup and view all the answers

    What is the function of desmosomes?

    <p>Provide strong attachment between adjacent cells</p> Signup and view all the answers

    Where are gap junctions located in epithelial cells?

    <p>Directly between adjacent cells</p> Signup and view all the answers

    What is the function of hemidesmosomes?

    <p>Bind the base of the cell to the basement membrane</p> Signup and view all the answers

    Which surface extension greatly increases the surface area of an absorptive cell?

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

    In which epithelial type can microvilli be found on the apical surface?

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

    How is the naming convention for epithelium determined when it contains flat, cuboidal, and columnar cells ?

    <p>By the shape of the outermost layer of cells</p> Signup and view all the answers

    Which type of epithelium consists of flattened cells and forms a single layer?

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

    Which of the following is a main function of the apical surface specializations in epithelial cells?

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

    Which of the following is NOT a type of intercellular junction found in epithelial cells?

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

    What is the function of the basement membrane in epithelial tissue?

    <p>Separates epithelium from underlying tissue</p> Signup and view all the answers

    Which type of collagen is mainly found in the basal lamina of epithelial cells?

    <p>Type IV collagen</p> Signup and view all the answers

    Which structure is responsible for movement on the apical surface of epithelial cells?

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

    Which type of epithelium is usually confined to the lining of larger excretory ducts of exocrine glands?

    <p>Stratified Cuboidal Epithelium</p> Signup and view all the answers

    In which part of the body would you most likely find Pseudostratified Epithelium?

    <p>Respiratory tract like trachea</p> Signup and view all the answers

    What creates the illusion of cellular stratification in Pseudostratified Epithelium?

    <p>Different levels of nuclei in cells</p> Signup and view all the answers

    Which epithelium undergoes transitions in cell shape depending on the degree of stretch?

    <p>Transitional Epithelium</p> Signup and view all the answers

    Where is Simple Columnar Epithelium most often found?

    <p>Small intestine</p> Signup and view all the answers

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