The Guttural Pouch Flashcards
The guttural pouch is a diverticulum of the _______ of the auditory tube.
mucosa
What epithelium lines the guttural pouch?
ciliated, pseudostratified columnar w/ goblet cells
What animal order typically has a guttural pouch?
perissodactyla
What are the 2 possible functions of the guttural pouch?
- lighten head
- cool blood going to brain
The auditory tube in all domestic mammals except the horse is made of mostly _______ cartilage which connects what two structures?
hyaline
nasopharynx
tympanic cavity
The auditory tube of domestic mammals other than the horse is lined by a tunica mucosa made of _______ mucosa.
respiratory
Function of auditory tube in domestic mammals other than the horse is:
equalize pressure on both sides of tympanic membrane
(T/F) The cartilage of the auditory tube in the horse extends into the guttural pouch.
False - cartilage only in auditory tube, NOT in guttural pouch
(T/F) Significant nerves and vessels lie between left and right sides of the guttural pouch.
False - only small connective tissue
What 4 structures make up the dorsal boundary of the guttural pouch?
- base of skull
- ventral surface of atlas
- longus capitis M
- rectus capitis ventralis Mm
(T/F) Left and right sides of the guttural pouch do not normally communciate.
True
How is the guttural pouch examined?
endoscopy
To exam the guttural pouch via endoscopy, the endoscope is inserted through the nostril and then what 4 structures before the guttural pouch?
ventral nasal meatus –> choana –> nasopharynx –> pharyngeal opening of auditory tube
The (medial/lateral) compartment of the guttural pouch is larger.
medial
What disease of the guttural pouch is where it accumulates with air?
tympany
Tympany of the guttural pouch usually occurs in horses of what age? Is it unilateral or bilateral?
<1 year
unilateral
How do you treat tympany of the guttural pouch?
make opening on normal side so air can evacuate
Term for the diseased state of an accumulation of pus in the guttural pouch.
empyema
What causes empyema of the guttural pouch? What clinical sign is seen?
respiratory infection (strep common)
purulent nasal discharge
Term for fungal growth in the guttural pouch.
mycosis
What is the typical clinical sign of mycosis of the guttural pouch?
epistaxis
What causes epistaxis in mycosis of the guttural pouch?
hemorrhage of internal carotid A
What are the 5 clinical signs of guttural pouch disease?
- epistaxis
- purulent nasal discharge
- dysphagia
- laryngeal paralysis
- horner’s syndrome
How can guttural pouch disease cause horner’s syndrome?
so thin it can damage structures it is in contact with (cranial nerves)
