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1.21.2.11 - The Pharynx and Guttural Pouch - Coggle Diagram
1.21.2.11 - The Pharynx and Guttural Pouch
pharynx
common cavity for food and ingesta
oral cavity vetrally with oespohagus dorsally
nasal avity with larynx and trachea
types
nasopharynx
oropharynx
laryngopharynx
airflow in the head
nasal cavity
oral cavity
oespohagus
trachea
nasopharynx
ventral margin
soft palate
rostral margin
conchae
caudal margin
laryngopharynx
lateral and dorsal margin
pharyngeal wall
lined with respiratory epithelium
nasopharyngeal recess
caudodorsal extension of the nasopharynx
found in most ungulates
blind ending
oropharynx
ventral margin
tongue
rostral margin
oral cavity
dorsal margin
soft palate
caudal margin
laryngopharynx
lines with stratified squamous epithelium
lanryngopharynx
caudal margin
larynx and opening of oesophagus
lateral & dorsal margin
pharyngeal wall
rostral margin
free tip of soft palate
lined with stratified squamous epithelium
soft palate
divides the pharynx
flexible muscular structure
palatinus muscle
shortens the palate
tensor veli palatini
causes lateral traction and thus tension
levator veli paltini
raises the palate during swallowing and mouth breathing
innervated by mandibular branch of trigeminal nerve
pharyngeal wall
striated muscles
dilation
stylopharyngeus caudalis
constriction
rostral
middle
caudal
all insert onto the roof of the pharynx
improtant for passage of food
innervation
vaugs nerve and hypoglossal nerve
swallowing
nasal cavity
trachea
oesophagus
oral cavity
process
palatopharyngeal arch constricts
hyoid apparatus pulls larynx forward
soft palate elevated to obstruct nasopharynx and open oropharynx
epiglottis flips back to cover tracheal opening
tongue pushes food into oesophagus
guttural pouch
horse
guttural pouch is a large diverticulum of the auditory tube in horses
auditory tube runs from nasopharynx to middle ear in all species
margins
lateral
skin
medial
septum
ventral
laryngopharynx & oespohagus
dorsal
base of skull
function: cools blood to brain?
drains can be entered through slits into nasopharynx
corrosion cast
cranial nerves
IX glossopharygeal
X vagus
XII hypoglossal
stylohoid bone
divides into lateral and medial compartments
blood vessels
external carotid artery
internal carotid artery
longus capitus muscle
pharyngeal lymph nodes
guttural pouch disease
bacterial
strep. equi.
strangles
fungal
mycosis
signs depend on location of plaques
surgical access to guttural pouch
via Viborg's triangle