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Large Animal Anatomy > The Guttural Pouch > Flashcards

The Guttural Pouch Flashcards

1
Q

The guttural pouch is a diverticulum of the _______ of the auditory tube.

A

mucosa

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2
Q

What epithelium lines the guttural pouch?

A

ciliated, pseudostratified columnar w/ goblet cells

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3
Q

What animal order typically has a guttural pouch?

A

perissodactyla

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4
Q

What are the 2 possible functions of the guttural pouch?

A
  1. lighten head
  2. cool blood going to brain
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5
Q

The auditory tube in all domestic mammals except the horse is made of mostly _______ cartilage which connects what two structures?

A

hyaline
nasopharynx
tympanic cavity

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6
Q

The auditory tube of domestic mammals other than the horse is lined by a tunica mucosa made of _______ mucosa.

A

respiratory

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7
Q

Function of auditory tube in domestic mammals other than the horse is:

A

equalize pressure on both sides of tympanic membrane

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8
Q

(T/F) The cartilage of the auditory tube in the horse extends into the guttural pouch.

A

False - cartilage only in auditory tube, NOT in guttural pouch

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9
Q

(T/F) Significant nerves and vessels lie between left and right sides of the guttural pouch.

A

False - only small connective tissue

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10
Q

What 4 structures make up the dorsal boundary of the guttural pouch?

A
  1. base of skull
  2. ventral surface of atlas
  3. longus capitis M
  4. rectus capitis ventralis Mm
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11
Q

(T/F) Left and right sides of the guttural pouch do not normally communciate.

A

True

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12
Q

How is the guttural pouch examined?

A

endoscopy

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13
Q

To exam the guttural pouch via endoscopy, the endoscope is inserted through the nostril and then what 4 structures before the guttural pouch?

A

ventral nasal meatus –> choana –> nasopharynx –> pharyngeal opening of auditory tube

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14
Q

The (medial/lateral) compartment of the guttural pouch is larger.

A

medial

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15
Q

What disease of the guttural pouch is where it accumulates with air?

A

tympany

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16
Q

Tympany of the guttural pouch usually occurs in horses of what age? Is it unilateral or bilateral?

A

<1 year
unilateral

17
Q

How do you treat tympany of the guttural pouch?

A

make opening on normal side so air can evacuate

18
Q

Term for the diseased state of an accumulation of pus in the guttural pouch.

A

empyema

19
Q

What causes empyema of the guttural pouch? What clinical sign is seen?

A

respiratory infection (strep common)
purulent nasal discharge

20
Q

Term for fungal growth in the guttural pouch.

A

mycosis

21
Q

What is the typical clinical sign of mycosis of the guttural pouch?

A

epistaxis

22
Q

What causes epistaxis in mycosis of the guttural pouch?

A

hemorrhage of internal carotid A

23
Q

What are the 5 clinical signs of guttural pouch disease?

A
  1. epistaxis
  2. purulent nasal discharge
  3. dysphagia
  4. laryngeal paralysis
  5. horner’s syndrome
24
Q

How can guttural pouch disease cause horner’s syndrome?

A

so thin it can damage structures it is in contact with (cranial nerves)

25
Q

Horner’s syndrome is most often caused by what disease of the guttural pouch?

A

mycosis

26
Q

What 3 arteries are in contact with the guttural pouch?

A
  1. external carotid A
  2. maxillary A
  3. internal carotid A
27
Q

What nerves are in contact with the guttural pouch?

A
  1. vagosympathetic trunk
  2. cranial cervical ganglion
  3. CN 7, 9-12
  4. mandibular N
28
Q

Epistaxis from guttural pouch disease is caused by damage to __________.

A

internal carotid A

29
Q

Purulent nasal drainage of guttural pouch disease is caused by abscess of __________.

A

medial retropharyngeal lymph nodes

30
Q

Dysphagia and laryngeal paralysis due to guttural pouch disease is caused by damage to ________ and _______.

A

glossopharyngeal + vagus Nn

31
Q

Horner’s Syndrome due to guttural pouch disease is caused by damage to _________.

A

cranial cervical ganglion

32
Q

Why may bleeding not be stopped in guttural pouch disease even when internal carotid A is ligated?

A

cerebral arterial circle

Large Animal Anatomy (41 decks)

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