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47 Cards in this Set
- Front
- Back
What feature of the tongue is indicated by the white arrow? |
Vallate Papillae
The 8-12 vallate papillae mark the juncture between the oral anterior 2/3 and the posterior pharyngeal 1/3. |
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What feature of the tongue is indicated by the white arrow?
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The Foramen Caecum, at the apex of the Terminal Sulcus.
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What is the embryologic origin of the Foramen Caecum?
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It is a remnant of the embryological development of the thyroid gland.
It closes before birth but remains as a landmark. |
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What is the name of V-shaped groove immediately posterior to the Vallate Papillae?
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The Terminal Sulcus.
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What is the name of the groove indicated by the white arrow?
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The Median Groove
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What type of papillae are found at the location on the tongue indicated by the white arrow?
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Foliate Papillae
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What type of papillae are found at the location indicated by the white arrow?
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Fungiform Papillae
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What type of papillae are found at the location indicated by the white arrow?
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Filiform Papillae.
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Which type of papillae contain taste receptors?
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Foliate, Fungiform, and Vallate Papillae.
Filiform Papillae are mechanoreceptive only. |
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What is the structure indicated by the white arrow?
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The Frenulum
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What structures lie lateral to the Frenulum, overlying the sublingual gland?
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The Sublingual Folds
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What gland is indicated by the white arrow?
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The Sublingual Gland.
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On which sublingual structures do the Submandibular Ducts appear?
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The Sublingual Caruncles (or Papilla).
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What duct is indicated by the white arrow?
Where does it open? |
The Submandibular Duct.
It opens on the Sublingual Papilla (Caruncle) |
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What nerve is indicated by the white arrow?
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The Lingual Nerve.
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What nerve is indicated by the white arrow?
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The Lingual Nerve
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What nerve carries general sensory information from the anterior 2/3 of the tongue?
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The Lingual Nerve (from V3)
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What nerve carries taste information from the anterior 2/3 of the tongue?
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The Chorda Tympani (from CN VII) steals the fibres from the Lingual Nerve.
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What nerve carries taste and general sensory innervation for the posterior 1/3 of the tongue?
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The Glossopharyngeal Nerve (CN IX)
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What nerve is indicated by the white arrow?
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The Glossopharyngeal Nerve (CN IX)
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What nerve is indicated by the white arrow?
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The Hypoglossal Nerve (CN XII)
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What artery is indicated by the white arrow?
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The Lingual Artery, off of the external carotid.
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What vein does the blood from the tongue drain into?
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The Internal Jugular Vein
(through the Dorsal and Deep Lingual Veins) |
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What nerve carries somatic motor innervation to the tongue?
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The Hypoglossal Nerve (CN XII)
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What section of the roof of the mouth is indicated by the white arrow?
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The Hard Palate.
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What section of the roof of the mouth is indicated by the white arrow?
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The Soft Palate.
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What structure of the mouth is indicated by the white arrow?
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The Uvula
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What muscle is indicated by the white arrow?
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The Palatoglossus Muscle.
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What muscle is indicated by the white arrow?
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The Palatopharyngeus Muscle, forming the structure of the palatopharyngeal arch.
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What structures are indicated by the white arrows?
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The Palatine Tonsils
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What surface is indicated by the white arrow?
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The Posterior Wall of the Oropharynx.
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Which extrinsic tongue muscle is innervated by the Vagus Nerve (CN X)?
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The Palatoglossus
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What muscle is indicated by the white arrow?
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The Genioglossus
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What tongue muscle is indicated by the white arrow?
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The Hyoglossus
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What tongue muscle is indicated by the white arrow?
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The Styloglossus.
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What muscles are indicated by the white arrows?
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The Genioglossus Muscles.
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What movements do the Genioglossus Muscles control?
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The Genioglossus Muscles depress and protrude the tongue.
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What tongue muscle is indicated by the white arrow?
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The Hyoglossus
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What action does the Hyoglossus perform?
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The Hyoglossus and the Styloglossus both retract the tongue.
The Hyoglossus also pulls down the sides of the tongue. |
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What muscle is indicated by the white arrows?
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The Mylohyoid Muscle
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What tongue muscle is indicated by the white arrow?
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The Styloglossus.
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What nerve innervates the Styloglossus?
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The Hypoglossal Nerve (CN XII)
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What is the action of the Styloglossus?
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Both the Styloglossus and the Hyoglossus retract the tongue.
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What muscle is indicated by the white arrow?
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The Mylohyoid Muscle
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What muscle is indicated by the white arrow?
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The Geniohyoid Muscle.
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What muscles form the floor of the mouth?
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The Mylohyoid and Geniohyoid muscles.
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What actions do the Mylohyoid and Geniohyoid muscles perform?
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They contribute to elevating the hyoid bone (and therefore the larynx) during swallowing or depressing the Mandible, depending on the tone of the strap muscles.
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