Podcast
Questions and Answers
What structure separates the anterior and posterior portions of the tongue?
What structure separates the anterior and posterior portions of the tongue?
What type of papillae are located along the lateral border of the tongue?
What type of papillae are located along the lateral border of the tongue?
Which of the following papillae are NOT associated with taste buds?
Which of the following papillae are NOT associated with taste buds?
Which extrinsic muscle draws the tongue upwards and backwards?
Which extrinsic muscle draws the tongue upwards and backwards?
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What is the primary function of the lingual tonsil?
What is the primary function of the lingual tonsil?
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Where is the foramen caecum located on the tongue?
Where is the foramen caecum located on the tongue?
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Which intrinsic muscle shortens the tongue and turns the tip and sides upwards?
Which intrinsic muscle shortens the tongue and turns the tip and sides upwards?
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What is the approximate turnover rate of taste bud cells?
What is the approximate turnover rate of taste bud cells?
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What is the primary action of the Hyoglossus muscle?
What is the primary action of the Hyoglossus muscle?
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Which muscle is responsible for flattening and broadening the tongue?
Which muscle is responsible for flattening and broadening the tongue?
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Which of the following structures is NOT present on the ventral surface of the tongue?
Which of the following structures is NOT present on the ventral surface of the tongue?
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Which of these muscles is NOT an extrinsic muscle of the tongue?
Which of these muscles is NOT an extrinsic muscle of the tongue?
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Which of the following is NOT a type of lingual papillae?
Which of the following is NOT a type of lingual papillae?
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Which muscle shortens the tongue and pulls the tip and sides downwards?
Which muscle shortens the tongue and pulls the tip and sides downwards?
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Which of the following muscles works to elevate the tongue, closing off the mouth from the pharynx?
Which of the following muscles works to elevate the tongue, closing off the mouth from the pharynx?
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Which of the following muscles narrows and lengthens the tongue?
Which of the following muscles narrows and lengthens the tongue?
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Which nerve is responsible for the motor supply of the Palatoglossus muscle?
Which nerve is responsible for the motor supply of the Palatoglossus muscle?
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What is the primary artery that supplies blood to the tongue?
What is the primary artery that supplies blood to the tongue?
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Which of the following is NOT a possible cause of Glossitis?
Which of the following is NOT a possible cause of Glossitis?
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What is the main venous drainage pathway for the tongue?
What is the main venous drainage pathway for the tongue?
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Which nerve is responsible for taste sensation on the anterior 2/3 of the tongue?
Which nerve is responsible for taste sensation on the anterior 2/3 of the tongue?
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What is a possible implication of tongue piercings on oral hygiene?
What is a possible implication of tongue piercings on oral hygiene?
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What type of glossitis is characterized by a smooth, red, diamond-shaped patch in the center of the tongue?
What type of glossitis is characterized by a smooth, red, diamond-shaped patch in the center of the tongue?
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What is the name of the condition pictured as "Geographic Tongue"?
What is the name of the condition pictured as "Geographic Tongue"?
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What is the primary cause of black hairy tongue?
What is the primary cause of black hairy tongue?
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What is the most common site of squamous cell carcinoma (SCC) in the oropharynx?
What is the most common site of squamous cell carcinoma (SCC) in the oropharynx?
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Which of the following can contribute to the appearance of black hairy tongue?
Which of the following can contribute to the appearance of black hairy tongue?
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What is the percentage of oropharyngeal cancers that are made up of squamous cell carcinomas?
What is the percentage of oropharyngeal cancers that are made up of squamous cell carcinomas?
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What is the name of the elongated papillae that can become overgrown in black hairy tongue?
What is the name of the elongated papillae that can become overgrown in black hairy tongue?
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What is the recommended treatment for black hairy tongue?
What is the recommended treatment for black hairy tongue?
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What does the acronym SCC refer to in the context provided?
What does the acronym SCC refer to in the context provided?
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Where are supporting cells typically located within a taste bud?
Where are supporting cells typically located within a taste bud?
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What is the function of taste cells in relation to food molecules?
What is the function of taste cells in relation to food molecules?
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How do taste receptors transmit taste signals to the brain?
How do taste receptors transmit taste signals to the brain?
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Which of the following is NOT a function of saliva in relation to taste?
Which of the following is NOT a function of saliva in relation to taste?
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The statement 'Taste starts digestion and is closely linked to the other 4 senses…' implies what about the digestive process?
The statement 'Taste starts digestion and is closely linked to the other 4 senses…' implies what about the digestive process?
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What is the name of the muscle that originates from the superior genial tubercle?
What is the name of the muscle that originates from the superior genial tubercle?
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Extrinsic tongue muscles alter the position of the tongue, but which of the following is NOT an extrinsic muscle?
Extrinsic tongue muscles alter the position of the tongue, but which of the following is NOT an extrinsic muscle?
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Which tongue muscle plays a role in pulling the tongue forward and protruding it from the mouth?
Which tongue muscle plays a role in pulling the tongue forward and protruding it from the mouth?
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Which of the following tongue muscle is involved in depressing the tongue?
Which of the following tongue muscle is involved in depressing the tongue?
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Which of the following is NOT a function of the tongue?
Which of the following is NOT a function of the tongue?
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The tongue's dorsal surface is:
The tongue's dorsal surface is:
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What term refers to the tongue's ability to detect different tastes?
What term refers to the tongue's ability to detect different tastes?
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Which of the following is an intrinsic muscle of the tongue?
Which of the following is an intrinsic muscle of the tongue?
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What is the primary function of the tongue's apex (tip)?
What is the primary function of the tongue's apex (tip)?
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Flashcards
Epiglottis
Epiglottis
A flap that covers the windpipe during swallowing to prevent food entry.
Sublingual Papillae
Sublingual Papillae
Structures that include filiform, fungiform, circumvallate, and foliate papillae on the tongue's surface.
Sulcus Terminalis
Sulcus Terminalis
A V-shaped groove that divides the tongue into anterior and posterior sections.
Taste Buds
Taste Buds
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Circumvallate Papillae
Circumvallate Papillae
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Foliate Papillae
Foliate Papillae
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Lateral Border of Tongue
Lateral Border of Tongue
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Ventral Surface of Tongue
Ventral Surface of Tongue
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Hyoglossus
Hyoglossus
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Palatoglossus
Palatoglossus
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Styloglossus
Styloglossus
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Superior Longitudinal Muscle
Superior Longitudinal Muscle
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Inferior Longitudinal Muscle
Inferior Longitudinal Muscle
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Vertical Muscle
Vertical Muscle
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Transverse Muscle
Transverse Muscle
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Nerve Innervation of Tongue
Nerve Innervation of Tongue
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Glossopharyngeal Nerve (IX)
Glossopharyngeal Nerve (IX)
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Chorda Tympani
Chorda Tympani
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Lingual artery
Lingual artery
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Geographic Tongue
Geographic Tongue
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Glossitis
Glossitis
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Median Rhomboid Glossitis
Median Rhomboid Glossitis
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Lingual vein
Lingual vein
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Impacts of Tongue Piercings
Impacts of Tongue Piercings
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Tongue
Tongue
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Intrinsic Tongue Muscles
Intrinsic Tongue Muscles
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Extrinsic Tongue Muscles
Extrinsic Tongue Muscles
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Functions of the Tongue
Functions of the Tongue
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Black Hairy Tongue
Black Hairy Tongue
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Squamous Cell Carcinoma (SCC)
Squamous Cell Carcinoma (SCC)
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Lingual Papillae
Lingual Papillae
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Posterior Lateral Border of Tongue
Posterior Lateral Border of Tongue
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Muscles of the Tongue
Muscles of the Tongue
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Treatment for Black Hairy Tongue
Treatment for Black Hairy Tongue
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Risk of Oral Piercings
Risk of Oral Piercings
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Oropharyngeal Cancer
Oropharyngeal Cancer
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Supporting Cells
Supporting Cells
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Taste Cells
Taste Cells
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Taste Pore
Taste Pore
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Taste Sensation Process
Taste Sensation Process
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Safety Role of Taste
Safety Role of Taste
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Genioglossus
Genioglossus
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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!