Epithelium Junctional Complexes Quiz
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Questions and Answers

What type of junction forms a seal between adjacent cells?

  • Desmosome
  • Tight junctions (correct)
  • Adherent junctions
  • Gap junctions
  • Which transmembrane glycoprotein is responsible for mediating cell adhesion at adherent junctions?

  • Integrin
  • E-cadherin (correct)
  • Occludin
  • Claudin
  • What type of junction provides channels for communication between adjacent cells?

  • Desmosomes
  • Gap junctions (correct)
  • Adherent junctions
  • Tight junctions
  • What cytoskeletal feature is associated with adherens junctions at the apical pole of epithelial cells?

    <p>Actin filaments</p> Signup and view all the answers

    Which protein links cadherins to actin filaments at adherens junctions?

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

    What is the main function of desmosomes in epithelial cells?

    <p>Cell adhesion</p> Signup and view all the answers

    Which structure directly links intermediate filaments to the extracellular matrix?

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

    What is the primary function of gap junctions?

    <p>Mediating intercellular communication</p> Signup and view all the answers

    Which type of protein forms the primary structural component of desmosomes?

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

    What is the approximate size limit for molecules that can pass through gap junctions?

    <p>$1.5$ nm</p> Signup and view all the answers

    Which structure is responsible for anchoring cells to the extracellular matrix via laminin binding?

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

    Which of the following protein complexes forms a channel for intercellular communication?

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

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