Cell Junctions: Types, Functions, and Pathologies
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Questions and Answers

Which junction is responsible for allowing small molecules and ions to pass freely between adjacent cells?

  • Gap junctions (correct)
  • Adherens junctions
  • Anchoring junctions
  • Tight junctions
  • Among the proteins unique to tight and gap junctions, which one is specifically involved in forming water-tight seals between epithelial cells?

  • Connexins
  • Cadherins
  • Integrins
  • Claudins (correct)
  • Which classification of epithelial tissue is primarily involved in absorption and secretion, and typically found in areas like the intestines?

  • Stratified columnar epithelium
  • Simple squamous epithelium
  • Simple cuboidal epithelium (correct)
  • Stratified squamous epithelium
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