3- anatomy
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Questions and Answers

What is the color of the alveolar mucosa?

  • Pale white
  • Coral pink
  • Dull pink
  • Red (correct)
  • What is the shape of the interdental papilla in posteriors?

  • Pyramidal
  • Conical
  • Flat (correct)
  • Spherical
  • Which layer of the oral epithelium provides protection against mechanical injury during mastication?

  • Prickle cell layer
  • Basal layer
  • Keratinized cell layer (correct)
  • Granular cell layer
  • Where is the mucogingival junction located?

    <p>At the junction of the free gingiva and the attached gingiva</p> Signup and view all the answers

    Which layer of the oral epithelium contains cells with pyknotic nuclei and granules of keratohyaline?

    <p>Granular layer</p> Signup and view all the answers

    In which layer of the oral epithelium do cells undergo mitotic cell division and have a full complement of organelles?

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

    Which layer of the oral epithelium has cells that may or may not have nuclei and lack organelles?

    <p>Keratinized layer</p> Signup and view all the answers

    Which layer of the oral epithelium has intercellular junctions between cells known as desmosomes?

    <p>Prickle layer</p> Signup and view all the answers

    Which cells in the oral mucosa are responsible for defense?

    <p>Langerhans cells</p> Signup and view all the answers

    Which cells in the oral mucosa are involved in pigment synthesis?

    <p>Keratin-producing cells</p> Signup and view all the answers

    Which cells in the oral mucosa serve a sensory function?

    <p>Merkel’s cells</p> Signup and view all the answers

    Which layer of the oral epithelium is more permeable than the oral or sulcular epithelium?

    <p>Junctional epithelium</p> Signup and view all the answers

    Which is responsible for the presence or absence of keratinization on the lining epithelium?

    <p>Lamina propria</p> Signup and view all the answers

    Which type of epithelium overlaps the coronal border of the junctional epithelium and shows resistance to mechanical forces?

    <p>Sulcular epithelium</p> Signup and view all the answers

    Which layer of the oral epithelium is attached by one broad surface to the tooth and by the other to the gingival connective tissue?

    <p>Junctional epithelium</p> Signup and view all the answers

    Which cell type is responsible for the synthesis of glycoproteins and glycosaminoglycans in the connective tissue?

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

    Which cell type is derived from circulating blood monocytes and is numerous in inflamed tissue?

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

    Which cell type is responsible for the production of vasoactive substances that can affect the function of the microvascular system?

    <p>Mast cells</p> Signup and view all the answers

    Where do the alveologingival fibers originate from?

    <p>Periosteum at the alveolar crest</p> Signup and view all the answers

    Where do the transseptal fibers insert?

    <p>Cementum of both teeth</p> Signup and view all the answers

    Where do the periostogingival group fibers originate from?

    <p>Periosteum of the lateral aspect of the alveolar process</p> Signup and view all the answers

    Where do the interpapillary group fibers originate?

    <p>Within the interdental gingiva (papilla), orafacial course</p> Signup and view all the answers

    What is the role of the periodontal ligament (PDL) in protecting the tooth?

    <p>Preventing resorption by the normal remodeling process affecting adjacent alveolar bone</p> Signup and view all the answers

    What do the precursor cells in the periodontal ligament (PDL) have the potential to produce?

    <p>Cementum, periodontal ligament, and bone</p> Signup and view all the answers

    Where are cementocytes located within the cementum matrix?

    <p>In lacunae within the cementum matrix</p> Signup and view all the answers

    Where does ACCELLULAR CEMENTUM mainly contain bundles of Sharpey’s fibers?

    <p>Coronal and middle third of the root</p> Signup and view all the answers

    Where does CELLULAR CEMENTUM contain both extrinsic and intrinsic fibers?

    <p>Apical third of the root and in furcations</p> Signup and view all the answers

    Where do cementoblasts originate from?

    <p>Ectomesenchymal cells in the dental follicle</p> Signup and view all the answers

    What is the role of odontoclasts (cementoclasts)?

    <p>Cemental resorption</p> Signup and view all the answers

    Where do cementocytes reside within the cementum matrix?

    <p>In lacunae</p> Signup and view all the answers

    What are extrinsic fibers (Sharpey’s fibers) embedded in?

    <p>Root cementum and alveolar bone</p> Signup and view all the answers

    What is the role of cementum in orthodontic treatment?

    <p>Cementum is responsible for normal anchorage of the tooth</p> Signup and view all the answers

    Where are the outer plates of the alveolar process continuous with?

    <p>The body of the maxilla and mandible</p> Signup and view all the answers

    What is the composition of the cribiform plate in the alveolar process?

    <p>Cortical bone with Sharpey’s fiber attachments of the PDL</p> Signup and view all the answers

    Which cells become incorporated into bone as osteocytes during bone formation?

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

    What may promote the conversion of fenestrations into dehiscences in the alveolar process?

    <p>Surgical interventions</p> Signup and view all the answers

    What provides innervation, lymphatic drainage, and blood supply to bone?

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

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