Mouth and tongue Flashcards
chambers/passageways of mouth
vestibule
oral cavity
oropharyngeal
boundaries of vestibule
externally: cheek and lips
internally: teeth and gums
boundaries of oral cavity
anteriolateral: teeth and gums
superiorly: hard and soft palate
boundaries of oropharyngeal isthmus
superiorly: soft palate
inferiorly: tongue
laterally: palatoglossal arches
hard palate formed by
palatine process of maxilla
horizontal plate of the palatine bone
function of hard palate
allows mammal to breathe while nursing
soft palate separates which two areas
nasopharynx from oropharynx
soft palate made of
movable muscular folds
muscles of the soft palate
tensor veli palatini levator veli palatini musculus uvulae palatoglossus palatopharyngeous
muscles of soft palate control opening of what two passageways?
nasopharyngeal isthmus
oropharyngeal isthmus
(elevates when swallowing to close off nasal cavity, important for chewing, swallowing, coughing, speaking, & sneezing)
what nerve are muscles of soft palate innervated by?
all innervated by vagus N (pharyngeal plexus),
except tensor veli palatini- mandibular division of trigeminal
types of tonsils
palatine
lingual
pharyngeal
tubal
Waldeyer’s Ring
imaginary ring formed by all tonsils
location of palatine tonsils
tonsillar fossa between palatoglossal and palatopharyngeal folds
location of lingual tonsils
posterior part of dorsum of tongue
location of pharyngeal tonsils
pharyngeal recess of nasopharynx
“adenoids”
location of tubal tonsils
extension of the pharyngeal tonsil
near opening of auditory tube
root of tongue attached to
mandible
hyoid
muscles of tongue
genioglossus
hyoglossus
styloglossus
palatoglossus
What innervates muscles of tongue
hypoglossal N
except palatoglossal-vagus (pharyngeal plexus)
innervation for taste on tongue
anterior 2/3= chorda tympani from facial N
posteriro 1/3= glossopharyngeal & some Vagus
general sensation innervation on tongue
anterior 2/3= lingual N (from mandibular division of trigeminal)
posterior 1/3= glosopharyngeal N
largest, most superior muscle of tongue
genioglossus
middle muscle of tongue
geniohyoid
muscle down midline of tongue
hyoglossus
action of genioglossus
protrudes and depresses tongue
action of hyoglossus
depresses and retracts tongue
action of styloglossus
retract and elevate tongue
action of palatoglossus
elevates tongue
