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Oral Cavity Anatomy and Functions
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Oral Cavity Anatomy and Functions

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Questions and Answers

Which part of the oral cavity extends from the lips to the oropharynx?

  • Vestibule
  • Oral cavity as a whole (correct)
  • Oral cavity proper
  • Gingivae
  • What is the primary function of the salivary glands?

  • Producing teeth
  • Moistening and lubricating food during digestion (correct)
  • Forming the food bolus
  • Breaking down food into smaller particles
  • Which of the following is NOT a function of the oral cavity?

  • Taste
  • Speech
  • Mastication
  • Breathing (correct)
  • How many teeth are present in the adult human mouth?

    <p>32</p> Signup and view all the answers

    What is the term for the bacterial infection of the teeth leading to tooth decay and cavities?

    <p>Dental caries</p> Signup and view all the answers

    What is the name of the muscular organ that manipulates food during mastication and aids in speech?

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

    What is the name of the structure that separates the oral and nasal cavities?

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

    Which muscle forms the floor of the oral cavity?

    <p>Mylohyoid muscle</p> Signup and view all the answers

    What is the name of the space between the teeth and lips/cheeks?

    <p>Oral vestibule</p> Signup and view all the answers

    Where are the parotid glands located?

    <p>In front of the ears</p> Signup and view all the answers

    What is the term for the curves formed by the upper and lower teeth?

    <p>Dental arches</p> Signup and view all the answers

    What is the term for the mucous membrane lining the oral cavity?

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

    Study Notes

    Boundaries and Divisions

    • The oral cavity is a mucous membrane-lined cavity that extends from the lips to the oropharynx.
    • It is divided into two parts:
      1. Vestibule: the area between the lips and teeth, and the cheeks and gums.
      2. Oral cavity proper: the area inside the teeth and gums.

    Structures

    • Teeth: hard, calcified structures used for biting and chewing food.
      • 32 teeth in the adult human mouth: 8 incisors, 4 canines, 8 premolars, and 12 molars.
    • Gums (gingivae): mucous membranes that cover the jawbones and surround the teeth.
    • Tongue: a mobile, muscular organ that manipulates food during mastication and aids in speech.
    • Palate: the roof of the oral cavity, divided into the hard palate and soft palate.
    • Salivary glands: produce saliva that moistens and lubricates food, and aids in digestion.
      • 3 pairs of salivary glands: parotid, submandibular, and sublingual.

    Functions

    • Mastication: the mechanical breakdown of food into smaller particles.
    • Forming food bolus: the mixing of food with saliva to form a bolus that can be swallowed.
    • Speech: the oral cavity plays a crucial role in speech, with the tongue, lips, and palate working together to form words and sounds.
    • Taste: the oral cavity contains taste buds that detect sweet, sour, salty, bitter, and umami flavors.

    Clinical Correlations

    • Dental caries: bacterial infection of the teeth, leading to tooth decay and cavities.
    • Gingivitis: inflammation of the gums, which can lead to periodontitis if left untreated.
    • Oral cancer: malignant growths that can occur in the oral cavity, often associated with tobacco use and human papillomavirus (HPV) infection.

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    Description

    Learn about the different structures and functions of the oral cavity, including the boundaries and divisions, teeth, gums, tongue, and salivary glands. Understand the importance of mastication, forming food bolus, speech, and taste. Also, explore clinical correlations such as dental caries, gingivitis, and oral cancer.

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