Tongue Anatomy Quiz
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Questions and Answers

What structure separates the anterior and posterior portions of the tongue?

  • Lingual Frenum
  • Foliate Papillae
  • Sulcus Terminalis (correct)
  • Median Lingual Sulcus
  • What type of papillae are located along the lateral border of the tongue?

  • Fungiform
  • Circumvallate
  • Filiform
  • Foliate (correct)
  • Which of the following papillae are NOT associated with taste buds?

  • Fungiform
  • Circumvallate
  • Filiform (correct)
  • Foliate
  • Which extrinsic muscle draws the tongue upwards and backwards?

    <p>Styloglossus (B)</p> Signup and view all the answers

    What is the primary function of the lingual tonsil?

    <p>Protection against infection (C)</p> Signup and view all the answers

    Where is the foramen caecum located on the tongue?

    <p>On the dorsum (A)</p> Signup and view all the answers

    Which intrinsic muscle shortens the tongue and turns the tip and sides upwards?

    <p>Superior Longitudinal Muscle (B)</p> Signup and view all the answers

    What is the approximate turnover rate of taste bud cells?

    <p>10 days (B)</p> Signup and view all the answers

    What is the primary action of the Hyoglossus muscle?

    <p>Depresses the tongue (C)</p> Signup and view all the answers

    Which muscle is responsible for flattening and broadening the tongue?

    <p>Vertical Muscle (C)</p> Signup and view all the answers

    Which of the following structures is NOT present on the ventral surface of the tongue?

    <p>Circumvallate Papillae (A)</p> Signup and view all the answers

    Which of these muscles is NOT an extrinsic muscle of the tongue?

    <p>Transverse Muscle (C)</p> Signup and view all the answers

    Which of the following is NOT a type of lingual papillae?

    <p>Conical (B)</p> Signup and view all the answers

    Which muscle shortens the tongue and pulls the tip and sides downwards?

    <p>Inferior Longitudinal Muscle (D)</p> Signup and view all the answers

    Which of the following muscles works to elevate the tongue, closing off the mouth from the pharynx?

    <p>Palatoglossus (D)</p> Signup and view all the answers

    Which of the following muscles narrows and lengthens the tongue?

    <p>Transverse Muscle (C)</p> Signup and view all the answers

    Which nerve is responsible for the motor supply of the Palatoglossus muscle?

    <p>Vagus Nerve (X) (A)</p> Signup and view all the answers

    What is the primary artery that supplies blood to the tongue?

    <p>Lingual Artery (A)</p> Signup and view all the answers

    Which of the following is NOT a possible cause of Glossitis?

    <p>Geographic Tongue (D)</p> Signup and view all the answers

    What is the main venous drainage pathway for the tongue?

    <p>Lingual Vein (C)</p> Signup and view all the answers

    Which nerve is responsible for taste sensation on the anterior 2/3 of the tongue?

    <p>Facial Nerve (VII) (D)</p> Signup and view all the answers

    What is a possible implication of tongue piercings on oral hygiene?

    <p>All of the above (D)</p> Signup and view all the answers

    What type of glossitis is characterized by a smooth, red, diamond-shaped patch in the center of the tongue?

    <p>Median Rhomboid Glossitis (B)</p> Signup and view all the answers

    What is the name of the condition pictured as "Geographic Tongue"?

    <p>Geographic Tongue (A)</p> Signup and view all the answers

    What is the primary cause of black hairy tongue?

    <p>Overgrowth of cells creating elongated papillae (D)</p> Signup and view all the answers

    What is the most common site of squamous cell carcinoma (SCC) in the oropharynx?

    <p>Tongue (B)</p> Signup and view all the answers

    Which of the following can contribute to the appearance of black hairy tongue?

    <p>All of the above (D)</p> Signup and view all the answers

    What is the percentage of oropharyngeal cancers that are made up of squamous cell carcinomas?

    <p>95% (C)</p> Signup and view all the answers

    What is the name of the elongated papillae that can become overgrown in black hairy tongue?

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

    What is the recommended treatment for black hairy tongue?

    <p>Cleaning the tongue with a toothbrush or tongue scraper (C)</p> Signup and view all the answers

    What does the acronym SCC refer to in the context provided?

    <p>Squamous Cell Carcinoma (A)</p> Signup and view all the answers

    Where are supporting cells typically located within a taste bud?

    <p>The outer portion of the taste bud (B)</p> Signup and view all the answers

    What is the function of taste cells in relation to food molecules?

    <p>To make contact with dissolved food molecules, triggering taste sensations (A)</p> Signup and view all the answers

    How do taste receptors transmit taste signals to the brain?

    <p>Through sensory neuron processes that connect to the brain (D)</p> Signup and view all the answers

    Which of the following is NOT a function of saliva in relation to taste?

    <p>Breaking down complex carbohydrates into simpler sugars (C)</p> Signup and view all the answers

    The statement 'Taste starts digestion and is closely linked to the other 4 senses…' implies what about the digestive process?

    <p>Taste plays a significant role in preparing the body for digestion (A)</p> Signup and view all the answers

    What is the name of the muscle that originates from the superior genial tubercle?

    <p>Genioglossus (C)</p> Signup and view all the answers

    Extrinsic tongue muscles alter the position of the tongue, but which of the following is NOT an extrinsic muscle?

    <p>Transversus linguae (A)</p> Signup and view all the answers

    Which tongue muscle plays a role in pulling the tongue forward and protruding it from the mouth?

    <p>Genioglossus (C)</p> Signup and view all the answers

    Which of the following tongue muscle is involved in depressing the tongue?

    <p>Hyoglossus (D)</p> Signup and view all the answers

    Which of the following is NOT a function of the tongue?

    <p>Hearing (B)</p> Signup and view all the answers

    The tongue's dorsal surface is:

    <p>Curved and rough (A)</p> Signup and view all the answers

    What term refers to the tongue's ability to detect different tastes?

    <p>Gustation (A)</p> Signup and view all the answers

    Which of the following is an intrinsic muscle of the tongue?

    <p>Verticalis (B)</p> Signup and view all the answers

    What is the primary function of the tongue's apex (tip)?

    <p>Speech articulation (D)</p> Signup and view all the answers

    Flashcards

    Epiglottis

    A flap that covers the windpipe during swallowing to prevent food entry.

    Sublingual Papillae

    Structures that include filiform, fungiform, circumvallate, and foliate papillae on the tongue's surface.

    Sulcus Terminalis

    A V-shaped groove that divides the tongue into anterior and posterior sections.

    Taste Buds

    Barrel-shaped organs located in lingual papillae, responsible for taste sensation.

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    Circumvallate Papillae

    Large papillae located at the back of the tongue that contain taste buds.

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    Foliate Papillae

    Ridges along the lateral borders of the tongue, involved in taste sensation.

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    Lateral Border of Tongue

    The sides of the tongue where foliate papillae are located.

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    Ventral Surface of Tongue

    The underside of the tongue that is covered with thin mucosa and veins.

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    Hyoglossus

    A muscle that originates from the hyoid bone and depresses the tongue.

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    Palatoglossus

    A muscle arising from the soft palate that lifts the tongue and separates the mouth from the pharynx.

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    Styloglossus

    A muscle from the styloid process that draws the tongue upward and backward.

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    Superior Longitudinal Muscle

    Intrinsic muscle that shortens the tongue and turns the tip and sides upwards.

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    Inferior Longitudinal Muscle

    Intrinsic muscle that shortens the tongue and pulls the tip and sides downwards.

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    Vertical Muscle

    Intrinsic muscle that flattens and broadens the tongue.

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    Transverse Muscle

    Intrinsic muscle that narrows and lengthens the tongue by pulling its sides inward.

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    Nerve Innervation of Tongue

    The tongue has both sensory and motor nerve supplies, with different areas served by various nerves.

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    Glossopharyngeal Nerve (IX)

    A cranial nerve responsible for sensory functions of the posterior tongue.

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    Chorda Tympani

    A branch of the Facial nerve (VII) that provides taste sensation to the anterior 2/3 of the tongue.

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    Lingual artery

    The artery that supplies blood to the tongue, branching from the external carotid artery.

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    Geographic Tongue

    A benign condition with smooth, irregular patches on the tongue resembling a map.

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    Glossitis

    Inflammation of the tongue, causing swelling, redness, and texture changes.

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    Median Rhomboid Glossitis

    A specific type of glossitis found in the midline of the posterior tongue.

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    Lingual vein

    The vein that primarily drains blood from the tongue.

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    Impacts of Tongue Piercings

    Tongue piercings can affect oral hygiene and dental integrity.

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    Tongue

    A movable muscular organ with a root, body, and tip, responsible for various functions.

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    Intrinsic Tongue Muscles

    Muscles within the tongue that change its shape for speech and food manipulation.

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    Extrinsic Tongue Muscles

    Muscles connected to the tongue, responsible for moving it around in the mouth.

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    Functions of the Tongue

    Key activities of the tongue include mastication, taste, swallowing, and speech.

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    Black Hairy Tongue

    An overgrowth of cells leading to elongated papillae on the tongue, trapping food, bacteria, and yeast, causing discoloration.

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    Squamous Cell Carcinoma (SCC)

    The most common type of oropharyngeal cancer, making up 95% of cases, often affecting the tongue's lateral border.

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    Lingual Papillae

    Small bumps on the tongue that can be classified into four types, some of which contain taste buds.

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    Posterior Lateral Border of Tongue

    The most common site (40%) for squamous cell carcinoma in the mouth.

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    Muscles of the Tongue

    The anatomical structures that allow movement and function of the tongue, with specific origins, insertions, and actions.

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    Treatment for Black Hairy Tongue

    Involves cleaning the tongue surface with a toothbrush or scraper and lifestyle adjustments.

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    Risk of Oral Piercings

    Oral piercings pose various risks including infections, damage to gum tissues, and potential oral cancers.

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    Oropharyngeal Cancer

    A type of cancer that affects the oropharynx, with a significant percentage being squamous cell carcinomas.

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    Supporting Cells

    Cells that support the taste bud, located on the outer portion.

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    Taste Cells

    Cells located in the center of the taste bud that react to dissolved food molecules.

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    Taste Pore

    An opening in the taste bud where taste cells contact food molecules.

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    Taste Sensation Process

    Taste cells send messages from the taste bud to the central nervous system.

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    Safety Role of Taste

    Taste helps identify nutrient-rich and potentially toxic foods.

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    Genioglossus

    Extrinsic muscle that protrudes the tongue from the mouth.

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    Study Notes

    Tongue, Taste Buds, and Taste

    • The tongue is a moveable muscular organ with a root, body, and tip (apex).
    • It has a curved dorsal surface and an inferior ventral surface.
    • The tongue is divided into two parts: the anterior two-thirds (oral/body) and the posterior one-third (pharyngeal/base).
    • The two parts are separated by the sulcus terminalis (a triangle-shaped landmark) and the foramen caecum.
    • The tongue has different types of lingual papillae, which are small bumps located on the dorsal surface.
      • Filiform papillae (no taste buds)
      • Fungiform papillae (taste buds)
      • Circumvallate papillae (taste buds)
      • Foliate papillae (taste buds)
    • Taste buds are barrel-shaped organs composed of 30-80 spindle-shaped cells extending from the basement membrane to the epithelial surface of the lingual papillae.
    • Taste buds have supporting cells and taste cells.
    • Taste buds are associated with the lingual papillae.
    • Taste sensation requires saliva, as substances must be dissolved to be tasted.
    • The tongue has both sensory and motor nerve supply.
      • Posterior 1/3 is innervated by the glossopharyngeal nerve (IX).
      • Anterior 2/3 is innervated by the lingual nerve (V), chorda tympani (VII), & lingual nerve.
      • Motor supply is from the hypoglossal nerve (XII) except the palatoglossus which is supplied by the vagus nerve (X).
    • The blood supply to the tongue is via the lingual artery, a branch of the external carotid artery.
    • The tongue drains through the lingual vein.
    • Common tongue conditions include geographic tongue and glossitis.
    • Tongue piercings are popular, but they may have negative effects on oral hygiene and dental integrity.
    • Black hairy tongue is characterized by the overgrowth of cells and trapping of food, bacteria, and yeast.
    • Squamous cell carcinoma (SCC) is a common type of oropharyngeal cancer, with the tongue being a frequent site.

    GDC ILOS

    • 1.1.5 Describe relevant and appropriate dental, oral, craniofacial, and general anatomy, and explain their application to patient management
    • 1.1.6 Describe relevant and appropriate physiology and explain its application to patient management
    • Related Topics: Epithelium, Muscles, Floor of the Mouth, Regional Anatomy, Oral Mucosa

    Aim

    • To gain an overview of the tongue's structure, functions, and variations in health and disease.

    Learning Outcomes

    • Describe the structures and functions of the tongue and taste buds.
    • Describe the muscles of the tongue (intrinsic and extrinsic), including nerve innervation and blood supply.
    • Describe how the sensation of taste is created.
    • Recognize variations in tongue appearance in both health and disease.

    Additional Resources

    • YouTube videos on tongue development and muscle anatomy
    • Written article on how the tongue works
    • Relevant KenHub anatomy resources

    Revision Prep

    • A table to summarize tongue muscles (Origin, Insertion, Action, Innervation, and Blood Supply).

    • Information on identifying and describing variations in healthy and unhealthy tongue appearances.

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    Description

    Test your knowledge on the anatomy of the tongue with this quiz. It covers various aspects including muscles, papillae, and their functions. Challenge yourself to see how much you know about this essential organ!

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