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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