Basic Airway Anatomy Flashcards

1
Q

the upper airway extends from the ___ to the ___

A

nose to the glottis

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2
Q

upper airway functions

A

humidification and filtration
olfaction
deglutition (swallowing)
phonation

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3
Q

reduction in intrathoracic pressure draws air through the ___

A

nose

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4
Q

what are the 3 nasal turbinates?

A

superior, middle, and inferior nasal turbinates

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5
Q

what do the turbinates do?

A

warm, humidify, filter

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6
Q

where does the blood supply come from to the nose?

A

the opthalmic, maxillary, and facial arteries

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7
Q

why do we use the oral cavity for intubation?

A

easy access and less trauma when used

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8
Q

what is the mouth opening dependent on?

A

the temporomandibular joint

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9
Q

what structures does the oral cavity consist of?

A

buccal mucosa, lips, tongue, hard and soft palate, teeth, and salivary glands

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10
Q

relaxation of the ___ muscle allows the tongue to fall in to the ____

A

genioglossus muscle; oropharynx

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11
Q

relaxation of the ____ muscle results in obstruction of the soft palate in the ____ segment of the upper airway

A

tensor palatine muscle; velopharyngeal segment

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12
Q

what does the pharynx do structurally?

A

connect the oral and nasal cavities with the larynx and esophagus

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13
Q

what are the 3 subcategories of the pharynx?

A

nasopharynx, oropharynx, and hypopharynx

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14
Q

contraction of the ____ muscles helps maintain airway patency

A

pharyngeal dilator mucles

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15
Q

functions of the larynx

A

airway protection, ventilation, phonation

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16
Q

how many cartilages are there?

A

9

there are unpaired and paired

17
Q

which cartilage is the only fully circular ring and at what cervical level is it located?

A

cricoid cartilage at C6

18
Q

which cartilage is the largest?

A

thyroid cartilage (aka adam’s apple)

19
Q

vocal cord movement is impacted by which 3 sets of paired cartilages?

A

arytenoid, corniculate, and cuneiform

20
Q

which paired cartilage controls vocal cord movement?

21
Q

vocal cord opening/going away

22
Q

vocal cord closure

23
Q

what structures are near the larynx

A

carotid arteries and jugular veins, vagus nerve, superior and inferior thyroid arteries, superior and recurrent laryngeal nerves

24
Q

what is included in the lower airway

A

trachea, bronchi, lower divisions

25
which side are you more likely to have an endobronchial intubation?
right mainstem bronchus
26
3 big neural pathways
``` trigeminal nerve (CN V) glossopharyngeal nerve (CN IX) vagus nerve (CN X) ```
27
what are the 3 divisions of the trigeminal nerve?
ophthalmic (V1) maxillary (V2) mandibular (V3)
28
which nerve provides sensory innervation to the face?
trigeminal nerve
29
which nerve provides sensory innervation to the posterior 1/3 of the tongue, oropharynx, vallecula, and anterior epiglottis?
glossopharyngeal nerve
30
internal branch of the superior laryngeal nerve
sensory innervation to posterior epiglottis to vocal cord folds
31
external branch of the superior laryngeal nerve
motor innervation below the vocal cords
32
if you have injury to the superior laryngeal nerve and the external branch what happens?
the patient will have hoarseness but not usually lose motor function
33
which processes can affect the adductors resulting in cord closure?
patent ductus, atrial enlargement, aortic arch aneurysm