Oral Mucosa Overview
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Questions and Answers

What is one of the primary functions of the oral mucosa?

  • Hearing
  • Olfaction
  • Protection (correct)
  • Vision
  • Which of the following areas is covered by lining mucosa?

  • Floor of the mouth (correct)
  • Gingiva
  • Dorsal surface of the tongue
  • Palate
  • What is a key characteristic of the lining mucosa in health?

  • Dry surface
  • Rigid structure
  • Moist surface (correct)
  • Rough texture
  • The oral mucosa can be classified into three main types. Which is NOT one of them?

    <p>Lateral mucosa</p> Signup and view all the answers

    Which type of epithelium is most commonly associated with the lining mucosa?

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

    What is one of the roles of the oral mucosa regarding underlying structures?

    <p>To provide a barrier to pathogens</p> Signup and view all the answers

    What is NOT a visual characteristic of healthy lining mucosa?

    <p>Firm and dry appearance</p> Signup and view all the answers

    Which of the following areas is typically associated with masticatory mucosa?

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

    What type of epithelium is most commonly associated with masticatory mucosa?

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

    Which of the following areas is covered by masticatory mucosa?

    <p>Attached gingivae</p> Signup and view all the answers

    What is a noted feature of masticatory mucosa in terms of texture?

    <p>Rubbery and resilient</p> Signup and view all the answers

    Which of these is true regarding the distribution of infection in masticatory mucosa?

    <p>Infection can spread rapidly.</p> Signup and view all the answers

    Which type of mucosa is associated with the presence of lingual papillae?

    <p>Specialised mucosa</p> Signup and view all the answers

    What happens to nonkeratinised epithelium in response to trauma?

    <p>It may transform into keratinising type.</p> Signup and view all the answers

    Sutures are typically required after surgical procedures in which type of mucosa?

    <p>Masticatory mucosa</p> Signup and view all the answers

    What is indicated by the term hyperkeratinisation?

    <p>Abnormal increase in keratin production</p> Signup and view all the answers

    Study Notes

    Oral Mucosa

    • The oral mucosa is a protective membrane lining the oral cavity.

    • Functions:

      • Protection
      • Secretion
      • Sensation

    Classification of Oral Mucosa

    • Lining mucosa:

      • Found on:
        • Buccal mucosa
        • Labial mucosa
        • Alveolar mucosa
        • Floor of the mouth
        • Ventral surface of the tongue
        • Soft palate
      • Characteristics:
        • Softer surface texture
        • Moist surface
        • Stretchable and compressible
      • Histology:
        • Nonkeratinized stratified squamous epithelium
      • Clinical features:
        • Requires sutures for surgical incisions
        • Easier and less painful local anesthetic injections
        • Prone to rapid infection
    • Masticatory mucosa:

      • Found on:
        • Attached gingivae
        • Hard palate
        • Dorsum of the tongue
      • Characteristics:
        • Rubbery surface texture
        • Resiliency (firm base)
      • Histology:
        • Keratinized stratified squamous epithelium
      • Clinical features:
        • Rarely requires sutures
        • Difficult and painful local anesthetic injections
        • Infections cause greater discomfort
    • Specialized mucosa:

      • Found on:
        • Lingual papillae
      • Histology:
        • Specialized epithelial structures

    Changes in Oral Mucosa Appearance

    • Hyperkeratinization:
      • Nonkeratinized epithelium transforming into keratinized epithelium due to frictional or chemical trauma.
      • Histologically similar to orthokeratinized epithelium with a keratin and granular layer.

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    Description

    This quiz covers the oral mucosa, including its functions, classification into lining and masticatory mucosa, and histological features. Understanding the similarities and differences in the types of oral mucosa is crucial for clinical applications and oral health practices.

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