Podcast
Questions and Answers
Which type of papillae is found at the tip and margin of the tongue?
Which type of papillae is found at the tip and margin of the tongue?
Which intrinsic muscle of the tongue is responsible for making the tongue broad and flat?
Which intrinsic muscle of the tongue is responsible for making the tongue broad and flat?
What is the arterial supply of the tongue primarily derived from?
What is the arterial supply of the tongue primarily derived from?
Which extrinsic muscle of the tongue is involved in its retraction and elevation?
Which extrinsic muscle of the tongue is involved in its retraction and elevation?
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How many circumvallate papillae are typically present on the tongue?
How many circumvallate papillae are typically present on the tongue?
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What is the root of the tongue primarily attached to?
What is the root of the tongue primarily attached to?
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Which part of the tongue is referred to as the dorsum?
Which part of the tongue is referred to as the dorsum?
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What type of papillae is not present on the pharyngeal part of the tongue?
What type of papillae is not present on the pharyngeal part of the tongue?
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Which structure attaches the inferior surface of the tongue to the floor of the mouth?
Which structure attaches the inferior surface of the tongue to the floor of the mouth?
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What is the space between the lateral and medial glossoepiglottic folds called?
What is the space between the lateral and medial glossoepiglottic folds called?
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Study Notes
Papillae of the Tongue
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Circumvallate Papillae:
- 8 to 12 in number; located anterior to the sulcus terminalis.
- Cylindrical shape with a circular fold surrounding it.
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Fungiform Papillae:
- Numerous and found at the tip and margins of the tongue.
- Narrow pedicle with a rounded, bright red head.
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Filiform Papillae:
- Present on the dorsum of the tongue.
- Gives a velvet-like appearance; has a conical shape.
Muscles of the Tongue
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Intrinsic Muscles:
- Four types:
- Superior Longitudinal: Shortens the tongue.
- Inferior Longitudinal: Also shortens the tongue.
- Vertical: Broadens and flattens the tongue.
- Transverse: Elongates the tongue.
- Four types:
-
Extrinsic Muscles:
- Genioglossus: Originates from the genial tubercle; protrudes and depresses the tongue.
- Hyoglossus: From the hyoid bone; retracts and elevates the tongue.
- Styloglossus: From the styloid process; retracts and elevates the tongue.
- Palatoglossus: From the palate; broadens the tongue along the palatine aponeurosis.
Arterial Supply
- Lingual Artery: A branch of the external carotid artery; supplies blood to the tongue.
External Features of the Tongue
-
Structure:
- Muscular organ located on the floor of the oral cavity, involved in speaking, chewing, and swallowing.
- Divided into three parts: root, body, and tip.
-
Root:
- Attached to mandible, hyoid bone, palate, and styloid bone.
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Tip:
- The free part located behind the incisors.
-
Body:
- Has two surfaces: upper (dorsum) and inferior.
- Dorsum divided by the V-shaped sulcus terminalis into:
- Oral part (anterior).
- Pharyngeal part (posterior).
- Foramen caecum located at the apex of the sulcus terminalis.
-
Foliate Papillae:
- 4 to 5 vertical folds on the lateral margin of the tongue.
Inferior Surface
- Covered by mucus; connects to the floor of the mouth via the frenulum linguae.
- Contains deep lingual veins and a membrane fold known as plica fimbriata.
Pharyngeal Part
- Area behind the sulcus terminalis; lacks papillae but contains numerous lymph nodes known as lingual tonsils.
Posterior Most Part
- Attaches to the epiglottis via three folds:
- Median glossoepiglottic fold.
- Right and left lateral glossoepiglottic folds.
- The space between these folds is referred to as the vallecula.
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Description
This quiz explores the different types of papillae on the tongue, including circumvallate, fungiform, and filiform papillae. Each type is discussed in terms of its location, shape, and unique characteristics. Test your knowledge of the anatomy of the tongue!
