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Airway management > Anatomy of the Airway > Flashcards

Anatomy of the Airway Flashcards

1
Q

Function of airway

A
  • Sound generated in larynx where pitch and volume manipulated
  • Swallowing: backward motion of tongue forces epiglottis over the glottis
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2
Q

What are the vocal folds held together by?

A

adducting arytenoid cartilages

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3
Q

True vocal cords

A

folds

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4
Q

False vocal cords

A

vestibular folds

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5
Q

Location of larynx in comparison to vertebrae?

A

C3-6 for adults

C2-3 for infants

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6
Q

4 cartilages responsible for larynx?

A
  1. Thyroid Cartilage
  2. Cricoid Cartilage
  3. Epiglottis
  4. Arytenoid Cartilages
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7
Q

Thyroid Cartilage

A

“adam’s apple”

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8
Q

Cricoid Cartilage

A

protective shield –> ring of hyaline cartilage that forms inferior wall of larynx

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9
Q

Epiglottis

A

large, leaf-shaped elastic cartilage

- closes off glottis when swallowing

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10
Q

Arytenoid Cartilages

A
  • paired cartilage –> influence position and tension on vocal cords
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11
Q

Musculature Innervation

A

Cricothyroid –> external laryngeal

Everything else –> recurrent laryngeal

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12
Q

Internal Laryngeal Innervation

A

sensory to larynx above and including VC

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13
Q

External Laryngeal Innvervation

A

motor to cricothyroid muscle –> VC tensor

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14
Q

Recurrent Laryngeal Innervation

A

All other intrinsic muscles of larynx

- Sensory below VC into trachea

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15
Q

B/l vagus nerve injury?

A

–> decreased phonation and mid-position of VC

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16
Q

Injury to superior laryngeal nerve?

A

unilateral -> subtle

b/l –> hoarseness, tiring of voice

17
Q

Unilateral injury to RLN

A

ipsilateral VC paralysis and hoarseness

18
Q

Acute B/l injury to RLN

A

Stridor, respiratory distress –> unopposed cricothyroid activity

19
Q

Chronic b/l injury to RLN

A

aphonia, less dangerous than acute

20
Q

Blood supply of larynx

A

Superior thyroid arteries
Cricothyroid artery
Superior Laryngeal Artery

Airway management (1 decks)

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