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Dysphagia Midterm > Cranial Nerves - Responsibility for Swallowing > Flashcards

Cranial Nerves - Responsibility for Swallowing Flashcards

1
Q

Cranial Nerves Responsible For Swallowing

A
  • Trigeminal CN V (5)
  • Facial CN VII (7)
  • Glossopharyngeal CN IX (9)
  • Vagus CN X (10)
  • Accessory CN XI (11)
  • Hypoglossal CN XII (12)
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2
Q

Trigeminal Nerve (CN V5) Main Responsibility

A
  • Sensation of the face
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3
Q

Trigeminal Nerve (CN V5) Damage

A
  • mastication
  • oral phase deficits
  • skin sensory loss
  • hyolaryngeal movement
  • epiglottic inversion
  • reside: valleculae, pyriforms
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4
Q

Exam for Trigeminal Nerve (CN V5)

A
  • clench teeth
  • swallow
  • test 3 face divisions
  • open mouth with and without resistance
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5
Q

Facial Nerve (CN VII 7) Main Responsibility

A
  • Motor innervation contralateral lower part of face, bilateral upper part of face
  • salivation, sensory/tase anterior 2/3 tongue
  • hyolaryngeal excursion
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6
Q

Exam for Facail Nerve (CN VII 7)

A
  • any movement of face
  • close eyes
  • rasie eyebrows,
  • smile
  • puff cheeks
  • pucker lips
  • frown
    -taste from anterior 2/3 tongue (sweet, salty, sour)
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7
Q

Glossopharyngeal (CN IX 9) Main Responsibility

A
  • sensory to mucosa posterior tongue and pharynx
  • taste posterior 1/3 tongue
  • sense arrival of bolus at palate
  • gag reflex and palate elevation
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8
Q

Glossopharyngeal Nerve (CN IX 9) Damage

A
  • damage is RARE!
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9
Q

Exam for GlossopharyngealNerve (CN IX 9)

A
  • hot/cold posterior 1/3 tongue
  • symmetry and movement of velum
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10
Q

Vagus (CN X 10) Main Responsibility

A
  • innervates palatoglossus, intrinsic pharyngeal and larygneal muscles
  • motor gag and swallow reflex
  • VP closure
  • Very Important!
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11
Q

Exam for Vagus Nerve (CN X 10)

A
  • velar elevatyion during phonation
  • velar symmetry
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12
Q

Recurrent Laryngeal Nerve

A
  • responsible for Glottic Closure
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13
Q

Accessory (CN XI 11) Main Responsibility

A
  • Motor nerve for 2 muscles in the neck
  • head turn/support
  • Assist with VP closure
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14
Q

Exam for Accessory Nerve (CN XI 11)

A
  • shrug shoulders
  • move head
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15
Q

Hypoglossla (CN XII 12) Main Responsibility

A

-innervates tongue muscles
- Motor- powersource of tongue
- anterior hyoid movement
-only nerve with contralateral innervation

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16
Q

Exam for Hypoglossal Nerve (CN XII 12)

A
  • movement of tongue
17
Q

Cranial Nerve Overview

A
  • CN V (5) Trigeminal- sensation of face
  • CN VII (7) Facial- motor innervation of face, sensation/taste of anterior 2/3 tongue, salivation
  • CN IX (9) Glossopharyngeal- sensory/taste posterior 1/3 tongue
  • CN X (10) Vagus - innervation of pharyngeal and laryngeal muscles
  • CN XI (11) Accessory- motor of neck
    -CN XII (12) Hypoglossal- motor for tongue

Dysphagia Midterm (17 decks)

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