pharynx Flashcards
general pharynx
musculofacial tube for respiration and GI
extend from base of skull to CV6 where its continuous w/esophagus
connects oral and nasal cavities to larynx for passage of air to and from lungs
connects oral cavity to esophagus for passage of food/liquids to stomach
divisions of pharynx
nasopharynx- post to nasal cavities
oropharynx- post to oral cavity
laryngopharynx- post to larynx
pharynx communicates with
nasal cavities(2) via choanae tympanic cavities(2) via auditory tube oral cavity larynx esophagus
nasopharynx
pharyngeal recess- locates on post sup wall of nasopharynx
pharyngeal tonsi- locates w/in recess
adenoids
enlarges, inflamed pharyngeal tonsils
can obstruct nasopharynx making breathing difficult
infection can also spread to tubal tonsils, blocking auditory tube and impairing hearing.
infection can also spread to middle ear
torus tubarius
mucosal prominence formed by cartilage of auditory
tube
pharyngeal ostium below torus tubarius represents opening of auditory tube
tubal tonsils
lymphoid tissue
located near opening of auditory tube
salpingopharyngeal fold
fold of mucosa overlying salpingopharyngeus m
salpingopharyngeal m
cartilage of auditory tube
thyroid cartilage
vagus
assists other pharyngeal mm during swallowing
levator pad
located below torus tubarius
fold of mucosa overlying levato veli palatini m
oropharynx
portion of pharynx post to oral cavity
fauces
passageway from mouth to oropharynx
faucial pillars
palatoglossal and palatopharyngeal folds
laryngeal inlet
part of laryngopharynx
anterior communication with larynx
palatoglossus m
soft palate
tongue
vagus
pulls tongue and soft palate together during swallowing
palatopharyngeal arch
fold of mucosa overlying palatopharyngeus m
palatopharyngeus m
soft palate
thyroid cartilage
vafus
swallowing
tonsillar bed/fossa
depression btwn palatoglossal and palatopharyngeal folds
formed by superior constrictor, hyoglossus, middle constrictor
palatine tonsil
lymphoid tissue
lies w/in tonsillar bed
epiglottic valleculae
depressions (2) btwn epiglottis and posterior tongue
formed by lateral and median glossoepiglottic folds
salpingopharyngeal fold
fold of mucosa overlying salpingopharyngeus m
swallowed/inspired objects
can sometimes lodge in epiglottic valleculae or piriform recess and potentially damage internal laryngeal n
fascias of pharynx
pharyngobasilar fascia
buccopharyngeal fascia
pharyngobasilar fascia
internal
lines mm of pharynx
buccopharyngeal fascia
external
covers mm of pharynx
superior constrictor
circularly oriented m forming sup portion of pharynx
attaches to base of skull
X via pharyngeal plexus
swallowing
middle constrictor
circularly oriented m forming middle portion of pharynx
hyoid bone
X cia pharyngeal plexus
swallowing
piriform recess
part of laryngopharynx
depression lateral to larynx
internal laryngeal n runs deep to mucosa of piriform recess
stylopharyngeus
styloid process
thryoid cartilage
IX
swallowing
salpingopharygeus
cartilage of auditory tube
thyroid cartilage
X
swallowing
gap 1
btwn base of skull and sup constrictor
passage of levator palatini and auditory tube
gap 2
btwn sup and middle constrictors
passage of stylopharyngeus and glossopharyngeal n
gap 3
btwn middle and inf constictors
passage of internal laryngeal n and superior laryngeal a
Gap 4
btwn inf constrictor and esophagus
passage recurrent laryngeal n and inf laryngeal a
aa of pharynx
sup thyroid
ascending pharyngeal
vv of pharynx
pharyngeal plexus of vv
drain to interna jugular v
pharyngeal nerve plexus
SVE- X, except stylopharyngeus which is IX
GVA- IX
sympathetics- from cervical sympathetic chain
gag reflex
sensory- IX
motor- X
stimulated by touching root of tongue