Lecture 18 - Carnivore URT Flashcards

1
Q

describe the passage of air from rostral to caudal

A
  1. nasal cavity
  2. pharynx
  3. larynx
  4. trachea
  5. main bronchus
  6. bronchioles
  7. alveoli
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2
Q

where is the nasal cavity found

A

between the nostrils and choanae

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3
Q

what divides the nasal cavity

A

nasal septum

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4
Q

describe the architecture of the nasal conchae

A

cartilage and bone covered by vascular mucosa

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5
Q

what functions to the conchae have

A
  1. warm and humidify air
  2. filter air and particles
  3. increase surface area for olfaction
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6
Q

what are the spaces between conchae? how many are there?

A

there are 4 meatuses between conchae

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7
Q

what are the 4 meatuses

A
  1. dorsal nasal
  2. middle nasal
  3. ventral nasal
  4. common nasal
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8
Q

what meatus is used for nasogastric tube placement

A

ventral nasal meatus

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9
Q

wht are the paranasal sinuses? what is their job?

A

air-filled mucosa-line spaces between inner and outer skull bones which communicate with the nasal cavity

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10
Q

T/F; the maxillary recess is a “sinus” associated with maxillary teeth roots and contains lateral nasal gland

A

TRUE

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11
Q

what is the job of the lateral nasal gland

A

moisture production

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12
Q

which species has subdivisions of their frontal parasinus

A

dog

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13
Q

what extra sinus do cats have? do dogs also have this sinus?

A

sphenoidal sinus - dogs have this sinus but it is nonfunctional due to conchal tissue

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14
Q

what are the 3 subdivisions of the pharynx

A
  1. nasopharynx
  2. oropharynx
  3. laryngopharynx
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15
Q

describe the location of the nasopharynx

A

dorsal to soft palate, extending from choanae to mucosal arches of SP

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16
Q

what does the nasopharynx contain in its dorsolateral walls? what is the function?

A

auditory tube opening allows for equalization of pressure

17
Q

what is the shortest portion of the pharynx

A

oropharynx

18
Q

describe the location of the oropharynx

A

ventral to soft palate and extending from the palatoglossal arches to the base of the epiglottis

19
Q

describe the location of the laryngopharynx

A

base of epiglottis to the start of the esophagus, dorsal to the larynx

20
Q

what does the laryngopharynx contain? what is the clinical significance?

A

piriform recess are channels on either side of the epiglottis which can trap foreign bodies

21
Q

the muscles of the pharynx are innervated by what

A
  1. glossopharyngeal n.
  2. vagus n.
22
Q

the muscle of the pharynx forms what functionally? what does this aid in?

A

forms the upper esophageal sphincter and aids in swallowing

23
Q

what are the muscles of the pharynx?

A
  1. hyopharyngeus
  2. thyropharyngeus
  3. cricopharyngeus
24
Q

what 4 cartilages comprise the larynx

A
  1. epiglottis
  2. thyroid
  3. arytenoid
  4. cricoid
25
Q

what cartilage of the larynx reminds madison of Australian men

A

cricoid because it’s big and broad (crikey!)

26
Q

what on the arytenoid is unique to dogs

A
  1. cuneiform process
  2. corniculate process
27
Q

what unique anatomical landmarks are formed in dogs once soft tissue is laid over the larynx

A
  1. vestibular fold
  2. laryngeal ventricle
28
Q

rima glottis

A

aka glottic cleft
opening of epiglottis

29
Q

glottis

A

tissues surrounding and rima glottis

30
Q

what are the muscles of the larynx? what is their function?

A
  1. cricoarytenoideus dorsalis (CAD)
  2. cricothyroideus

open and close rima glottis to control voice

31
Q

what is lar par

A

laryngeal paralysis or the failure to open during inspiration caused by dysfunction of the caudal laryngeal n.

32
Q

a tie-back surgery does what

A

attaches arytenoid to the wall for partial opening of the larynx

predisposes to asphyxiation

33
Q

describe the architecture of the trachea

A

C-shaped hyaline cartilage sequentially connected by annular ligaments

34
Q

what is the function of the trachea

A

air conduction

35
Q

T/F: the trachea is non-collapsible and immobile

A

FALSE - trachialis constricts trachea to increase air velocity during coughing and to accommodate growth of esophagus when swallowing

36
Q

Brachycephalic airway obstructive syndrome

A
  • stenotic nares
  • elongated soft palate
  • eversion of laryngeal ventricles
  • anything that affects airflow
37
Q

T/F: treatment for BAOS is to open the airway through invasive surgical procedure

A

TRUE