Anatomy of the Oral Cavity

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Questions and Answers

What is the boundary between the oral cavity and the pharynx?

  • The buccinator muscle
  • The oropharyngeal isthmus (correct)
  • The oral fissure
  • The alveolar periosteum

What is the name of the space between the lips and the cheeks externally and the gums and the teeth internally?

  • The vestibule (correct)
  • The oropharyngeal isthmus
  • The pharynx
  • The oral cavity proper

What forms the floor of the mouth?

  • The soft palate
  • The hard palate
  • The sublingual gland
  • The anterior two thirds of the tongue and the reflection of the mucous membrane from the sides of the tongue to the gum of the mandible (correct)

What is the function of the elastic fibers in the submucosa?

<p>To prevent the mucous membrane from being bitten between the teeth (B)</p> Signup and view all the answers

What is the midline fold of mucous membrane that connects the undersurface of the tongue to the floor of the mouth?

<p>The frenulum of the tongue (A)</p> Signup and view all the answers

Where does the duct of the parotid salivary gland open?

<p>Into the vestibule opposite the upper second molar tooth (A)</p> Signup and view all the answers

What is located on either side of the frenulum of the tongue?

<p>The submandibular duct of the submandibular gland opens onto the floor of the mouth (B)</p> Signup and view all the answers

What is the role of the tone of the buccinator muscle and the muscles of the lips?

<p>To keep the walls of the vestibule in contact with one another (B)</p> Signup and view all the answers

What is the function of the sublingual gland?

<p>It produces a low fold of mucous membrane (D)</p> Signup and view all the answers

What is the name of the mucous membrane that covers the gingiva or gum?

<p>The mucous membrane of the gingiva (D)</p> Signup and view all the answers

What is the location of the opening of the numerous ducts of the sublingual gland?

<p>On the summit of the sublingual fold (D)</p> Signup and view all the answers

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