Anatomy of the Tongue
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Questions and Answers

What is the surface that separates the anterior 2/3 and posterior 1/3 of the tongue?

  • V-shaped sulcus
  • Fissure
  • Terminal sulcus
  • Sulcus terminalis (correct)

    • What type of epithelium covers the surface of the tongue?

  • Pseudostratified ciliated columnar epithelium
  • Cuboidal epithelium
  • Stratified squamous epithelium (correct)
  • Stratified columnar epithelium

    • What is the function of the minor salivary glands in the tongue?

  • Producing mucous secretions
  • Producing serous secretions
  • Producing both mucous and serous secretions (correct)
  • Regulating tongue movement

    • Which major salivary gland is located in the cheek?

    <p>Buccal gland</p> Signup and view all the answers

    What is the name of the minor salivary gland located in the submucosa of the tongue?

    <p>Labial gland</p> Signup and view all the answers

    What is the ventral surface of the tongue?

    <p>The surface that faces the floor of the mouth</p> Signup and view all the answers

    Which of the following is NOT a major salivary gland?

    <p>Buccal gland</p> Signup and view all the answers

    What is the name of the papillae found on the surface of the tongue?

    <p>Filiform papillae</p> Signup and view all the answers

    What is the shape of filiform papillae?

    <p>Cone-shaped</p> Signup and view all the answers

    Where are fungiform papillae primarily located?

    <p>Tip and sides of the tongue</p> Signup and view all the answers

    What type of muscle makes up the tongue?

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

    How many types of lingual papillae are there?

    <p>4</p> Signup and view all the answers

    Where are circumvallate papillae located?

    <p>Sulcus terminalis or V-shaped region</p> Signup and view all the answers

    What is the shape of fungiform papillae?

    <p>Mushroom-shaped</p> Signup and view all the answers

    Where are foliate papillae located?

    <p>Sides of the tongue</p> Signup and view all the answers

    What is the function of taste buds on lingual papillae?

    <p>To detect taste</p> Signup and view all the answers

    Which type of papillae is described as "threadlike or cone-shaped"?

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

    Which type of papillae is described as "surrounded by a wall"?

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

    Which type of papillae is described as "mushroom-like"?

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

    Which type of papillae is described as "paperlike"?

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

    Which type of papillae does not have taste buds?

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

    What is the main function of serous acini?

    <p>To dissolve food particles</p> Signup and view all the answers

    Which of the following statements about taste buds is true?

    <p>Taste buds are found on the tip, sides, and back of the tongue.</p> Signup and view all the answers

    Which type of papillae is the most numerous?

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

    What are the functions of taste buds?

    <p>To detect the presence of harmful substances in food</p> Signup and view all the answers

    Which type of cell in the taste bud is responsible for transmitting taste signals to the brain?

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

    Which of the following structures is NOT part of the general structure of the tongue?

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

    Which of the following statements about taste buds is TRUE?

    <p>Taste buds are stimulated by the direct contact of food with the microvilli of taste cells.</p> Signup and view all the answers

    Which of the following is a characteristic of dark staining cells in taste buds?

    <p>They are responsible for supporting the taste cells.</p> Signup and view all the answers

    Which of the following layers of the tongue contains glands and lymphoid nodules?

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

    Which of the following is a TRUE statement about the muscularis mucosa of the tongue?

    <p>It is responsible for the folding of the mucosa of the tongue.</p> Signup and view all the answers

    Which of the following is a TRUE statement about the basal cells in taste buds?

    <p>They are undifferentiated stem cells that can differentiate into other types of cells.</p> Signup and view all the answers

    Study Notes

    Tongue Structure

    • The tongue has two main parts: the anterior 2/3 (body of tongue) and the posterior 1/3 (root of tongue), separated by a V-shaped sulcus terminalis.
    • The body of tongue is divided into four regions based on embryologic origin.

    Lingual Papillae

    • There are four types of lingual papillae:
      • Filiform papillae: coneshaped, numerous, and present all over the tongue, but has no taste buds.
      • Fungiform papillae: mushroom-shaped, present on the tip and sides of the tongue, and has taste buds.
      • Circumvallate papillae: located on the sulcus terminalis, surrounded by a wall, and has taste buds.
      • Foliate papillae: large, circular papillae, present on the back of the tongue, and has taste buds.

    Muscles of Tongue

    • The tongue has skeletal muscles.

    Salivary Glands

    • There are three main salivary glands: parotid, submandibular, and sublingual.
    • Minor salivary glands are present in the submucosa of the cheek (buccal gland) and tongue (labial gland).

    Taste Buds

    • Taste buds are onion-shaped structures in the epithelium of lingual papillae, such as fungiform papillae and circumvallate papillae.
    • Function of taste buds: uncover the surface to feel food directly, stimulate gustatory nerve fibers, and receive sweet, salty, sour, and bitter sensations.
    • Taste cells are pale-staining cells, while supporting cells are dark-staining cells.

    Histological Structure of Tongue

    • Mucosa: consists of epithelium, lamina propria (connective tissue), and muscularis mucosae (muscles of mucosa).
    • Submucosa: consists of connective tissue containing glands, esophagus, duodenum, or lymphoid nodules in the ileum.

    Subdivisions of Tongue based on Embryologic Origin

    • The body of tongue is divided into four regions based on embryologic origin.

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    Description

    This quiz covers the anatomy of the tongue, including its ventral surface and posterior region.

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