Anatomy of Human Lips
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Questions and Answers

Which part of the lip lacks a superficial layer of keratin or is lightly keratinized?

  • The inner oral mucosa
  • The transitional zone or vermilion border (correct)
  • The outer cutaneous part
  • The red (vermilion) border
  • What is the most common oral cavity malignancy, accounting for almost 95% of cases?

  • Ameloblastoma
  • Leiomyosarcoma
  • Odontogenic myxoma
  • Squamous cell carcinoma (correct)
  • What lifestyle factor typically causes neoplasms on the lower lip?

  • Tobacco smoking
  • Lack of exercise
  • Poor dental hygiene
  • Chronic sun exposure (correct)
  • Who is more susceptible to lip carcinoma, according to the text?

    <p>Middle-aged and elderly men</p> Signup and view all the answers

    What is the most effective treatment for lip carcinoma?

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

    What presents a potential complication of lip carcinoma treatment?

    <p>Regional metastasis</p> Signup and view all the answers

    What is the primary function of the lamina propria in the oral mucous membrane?

    <p>To permit distensibility over underlying tissues</p> Signup and view all the answers

    What is the average renewal rate of the surface cells in the epithelium?

    <p>12-14 days</p> Signup and view all the answers

    What type of fibers are present in the lamina propria?

    <p>Collagen and elastic fibers</p> Signup and view all the answers

    What is the main function of the minor salivary glands, the labial glands?

    <p>To synthesize the mucous secretions and provide moisture and lubrication</p> Signup and view all the answers

    What is the interface between the epithelium and lamina propria characterized by?

    <p>A highly corrugated surface</p> Signup and view all the answers

    What type of nerve fibers are abundant in the lamina propria?

    <p>Sensory nerve fibers</p> Signup and view all the answers

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