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541 - Exam 2 > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

What are the tissue layers of the cheeks?

A

Skin (incl. Vermillion border and transition zone)
Muscle
Glands
Mucous Membranes (incl. Vestibular fold and Labial frenula)

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2
Q

What are the four types of papillae on the tongue?

A
  1. Filiform - no taste buds, numerous
  2. Fungiform - taste buds, globular, at tip and lateral margins
  3. Valiate - taste buds, makes V shape, contains most taste buds
  4. Foliate - taste buds, lateral surface
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3
Q

What branchial arch forms the body of the tongue?

A

First arch

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4
Q

What branchial arch forms the root of the tongue?

A

Third arch

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5
Q

What branchial arch forms the epiglottus?

A

Fourth arch

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6
Q

What nerve innervates the tongue muscles for somatic motor?

A

CN XII - Hypoglossus (except Palatoglossus (CN X))

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7
Q

What are the four types of intrinsic muscle fibers for the tongue?

A

Superior longitudinal - curls tongue and shortens
Inferior longitudinal - curls tongue and shortens
Vertical - flattens tongue
Transverse - narrows tongue

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8
Q

Superior Fibers of genioglossus

  • Attachment
  • Action
  • Nerve
A

Attaches: Genial tubercles and body of tongue
Action: Retract tip of tongue
Nerve: CN XII

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9
Q

Middle fibers of genioglossus

  • Attachment
  • Action
  • Nerve
A

Attaches: Genial tubercles and body of tongue
Action: Depress dorsum of tongue, protrude tongue
Nerve: CN XII

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10
Q

Inferior fibers of genioglossus

  • Attachment
  • Action
  • Nerve
A

Attaches: Genial tubercles and hyoid
Action: Protrude tongue, advance hyoid
Nerve: CN XII

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11
Q

Hyoglossus

  • Attachment
  • Action
  • Nerve
A

Attaches: Hyoid bone to lateral surface of tongue
Action: Retrude tongue and draw sides downward, raise hyoid
Nerve: CN XII

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12
Q

Styloglossus

  • Attachment
  • Action
  • Nerve
A

Attaches: Styloid process, lateral surface of tongue
Action: Retrude tongue and draw sides upward
Nerve: CN XII

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13
Q

Palatoglossus

  • Attachment
  • Action
  • Nerve
A

Attaches: Palatal aponeurosis to dorsum and lateral surface of tongue
Action: Elevate tongue, depress palate
Nerve: CN X

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14
Q

What is the arterial blood supply of the tongue?

A

External Carotid Artery

  • Lingual a.
    • Dorsal Lingual
    • Deep Lingual
    • Sublingual
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15
Q

What provides general sensory function of the Ant 2/3 of the tongue?

A

CN V3

Trigeminal ganglion -> foramen ovale -> infratemporal fossa -> lingual nerve branches from V3 and goes to tongue

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16
Q

What provides general sensory function of the Post 1/3 of the tongue?

A

CN IX and X - Glossopharyngeal and Vagus

Sensory fibers exit brain -> Jugular foramen -> sensory cell bodies of Sup/Inf Glossopharngeal and vasal ganglia -> tongue

17
Q

What provides Special sensory (taste) of the Ant 2/3 of the tongue?

A

CN VII - Facial

Sensory fibers exit -> Int. acoustic meatus -> Geniculate ganglion -> facial canal -> Chordae tympani nerve through the middle ear -> petrotympanic fissure -> infratemporal fossa -> joins lingual nerve of V3 -> Tongue

18
Q

What provides Special sensory (taste) of the Post. 1/3 of the tongue?

A

CN IX - Glossopharyngeal

Sensory fibers exit -> Jugular foramen -> Sup/Inf glossopharyngeal ganglion -> tongue

19
Q

What branches of nerves lie in the floor of the mouth ?

A

Lingual nerve (branch of V3)
Chorda tympani and Submandibular Ganglion (of CN VII)
Glossopharyngeal nerve
Hypoglossal nerve

20
Q

The Lingual nerve branches off of what cranial nerve and provides what function?

A

Branches off of V3 and provides general sensory for Ant 2/3 of tongue

21
Q

What salivary glands are located at the floor of the mouth?

A

Submandibular and Sublingual salivary glands

22
Q

What provides arterial blood supply to the submandibular gland?

A

Facial artery - submental artery

23
Q

What provides arterial blood supply to the sublingual gland?

A

Lingual artery - sublingual artery

24
Q

What nerve provides the Parasympathetic function of the Submandibular and sublingual glands?

A

CN VII - Facial

Sup. Salivatory Nucleus -> int. acoustic meatus -> facial canal -> chorda tympani through middle ear -> petrotympanic fissure -> infratemporal fossa -> joins lingual nerve of V3 -> Synapse at submandibular ganglion -> continue onto submandibular and sublingual glands

25
Q

What structures run deep to the hyoglossus muscle?

A

Lingual artery

26
Q

What structures run superficial to the hyoglossus muscle?

A
  1. Hypoglossus nerve
  2. Lingual nerve
  3. Submandibular duct
27
Q

What muscles produce protusion of the tongue?

A

Genioglossus - middle and inferior fibers

28
Q

What muscles produce retrusion of the tongue?

A

Hyoglossus, Styloglossus, and Genioglossus (superior fibers)

29
Q

What muscles produce depression of the tongue?

A

Hyoglossus and Genioglossus (middle fibers)

30
Q

What muscles produce elevation of the tongue?

A

Palatoglossus and Styloglossus

31
Q

What muscles shorten the tongue?

A

Superior and Inferior longitudinal

32
Q

What muscles narrow the tongue?

A

Transverse tongue muscles

33
Q

What muscles flatten the tongue?

A

Vertical tongue muscles

541 - Exam 2 (4 decks)

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