oral cavity Flashcards
roof of the oral cavity
palate
floor of the oral cavity
tongue
lateral walls of the oral cavity
cheeks
anterior walls of the oral cavity
lips
oral cavity communicates anteriorly to the ___ through the openings of the mouth
outside
oral cavity communicates posterioly to the ____ through the oropharyngeal isthmus
oropharynx
the space between the lips and the teeth and the teeth and the cheeks is the ____
vestibule
_____ of ___ lip: a median fold of mucous membrane connecting the internal surface of upper lip to outer surface of upper gingiva
frenulum of the upper lip
frenulum of the upper lip is also called the ___ ___
labial frenulum
____ of ____ lip: a median fold of mucous membrane connecting the internal surface of lower lip to outer surface of lower gingiva
frenulum of lower lip
_____ _____ of tongue: a median fold of mucous membrane connecting the infrerior surface of tongue to the floor of the mouth
frenulum lingulae
___ ___: a fold of mucous membrane over the sublingual salivary gland
sublingual fold
___ ____ (____): a papillae on each side of the frenulum of the tongue for the submandibular duct
sublingual papilla (caruncle)
duct of the ____ gland: opposite upper second molar tooth
parotid
sensory supply to lips and cheeks are derived from the ___ and ___ divisions of the ____ nerve
maxillary
mandibular
sensory supply to the cheeks comes through 3 nerves
infraorbital (V2)
zygomaticofacial (V2)
buccal (V3)
sensory supply to the upper lip comes from 1 nerve
infraorbital (V2)
sensory supply to the lower lip comes from what nerve?
mental (V3)
5 parts to the teeth
crown neck root root canal apical foramen
gums are also called the ____
gingiva
___ is the visible portion of the tooth
crown
___ is the part of the tooth at the level of the gums
neck
___ is the embedded part of the tooth
root
_____ ____ is the part of the tooth inside the root that carry the nerves and blood vessels
root canal
nerve and blood vessels have to pass through the ___ ____ to enter the root canal
apical formane
_____: inflammation of the oral cavity
stomotitis
_____ teeth are for cutting
incisors
_____ teeth are for shredding muscle tissue
canines
___ and ____ are for chewing and grinding
premolar
molars
how many incisor teeth do we have?
4/4
permanent teeth
how any canine teeth do we have?
2/2
permanent teeth
how many premolars do we have?
4/4
permanent teeth
how many molars do we have?
6/6
how many permanent teeth do we have?
32
how many deciduous teeth do we have?
20
deciduous teeth
how many incisors do we have?
4/4
deciduous teeth
how many canines do we have?
2/2
deciduous teeth
how many molars do we have?
4/4
superior and inferior alveolar arteries are branches of the ___ artery
maxillary
lymphatic vessels of the teeth mainly drain to the ___ lymph nodes
submandibular
superior alveolar nerves are from the ___ division of the trigeminal
maxillary (V2)
inferior alveolar nerves are from the ____ division of the trigeminal
mandibular (V3)
the ant 2/3 of the palate is formed by the ____ processes of the maxillary bone and the ___ plates of the palatine bone which makes up the ___ palate
palatine
horizontal
hard
___ palate is the movable post 1/3 of the palate
soft
___ ___ - depression post to the central incisors into which the incisive canals open
incisive fossa
____ nerves pass through the incisive fossa
nasopalatine
____ ___ foramen: located medial to the 3rd molar tooth
greater palatine foramen
the greater palatine nerves and vessels emerge from this foramen
greater palatine foramen
___ ___ foramina located post to the greater palatine foramen
lesser palatine foramina
___ ___ foramina transmit the lesser palatine nerves and vessels to the soft palate and adjacent structures
lesser palatine
the soft palate has no bony skeleton but has an anterior ___ part and has a post ___ part
aponeurotic
muscular
soft palate has a curved free margin from which the ____ hangs
uvula
laterally, the soft palate is continuous with the wall of the ____ and is joined to the tongue and pharynx by 2 arches
pharynx
the arch that connects the soft palate to the tongue is the ____ arch
palatoglossal
the arch that connects the soft palate to the pharynx is the ____ arch
palatopharyngeal
____: the space between the oral cavity and the pharynx
fauces
superior boundary of the fauces
soft palate
inferior boundary of the fauces
root of the tongue
lateral boundary of the fauces
faucial pillars (arches)
___ of the fauces: short constricted space between the oral cavity and the oropharynx
isthmus
anterior boundary of the isthmus of the fauces
palatoglossal folds
post boundary of the isthmus of the fauces
palatopharygneal fold
____ ___ are located between the palatoglossal and palatopharyngeal folds
palatine tonsils
3 muscles of the soft palate
tensor veli palatini
musculus uvulae
levator veli palatini
origin of the tensor veli palatini
scaphoid fossa of medial pterygoid plate, spine of sphenoid bone and pharyngotympani tube cartilage
insertion of the tensor veli palatini
palatine aponeurosis
nerve supply to the tensor veli palatini
medial pterygoid nerve of V3 from the otic ganglia
action of the tensor veli palatini
tenses soft palate and opens auditory tube during swallowing and yawning
origine of the levator veli palatini
pharyngotympanic tube cartilage and petrous portion of temporal bone
insertion of the levator veli palatini
palatine aponeurosis
nerve supply of the levator veli palatini
pharyngeal branch of vagus nerve via pharyngeal plexus
action of he levator veli palatini
elevates soft palate during swallowing and yawning
origin of the palatoglossus
palatine aponeurosis
insertion of the palatoglossus
side of tongue
nerve supply of the palatoglossus
pharyngeal branch of vagus nerve via pharyngeal plexus
action of the palatoglossus
elevates posterior tonuge and draws soft palate onto tongue
origin of the palatopharyngeus
hard palate and palatine aponeurosis
insertion of the palatopharyngeus
lateral wall of pharynx
nerve supply of palatopharyngeus
pharyngeal branch of vagus nerve via pharyngeal plexus
acion of the palatopharyngeus
tenses soft palate and pulls walls of pharynx superiorly, anteriorly, and medially during swallowing
nerve supply of the musulus uvulae
pharyngeal branch of vagus nerve via pharyngeal plexus
origin of the musculus uvulae
posterior nasal spine andpalatine aponeurosis
insertion of the musculus uvulae
mucosa of uvulae
action of the musculus uvulae
shortens uvula and pulls it superiorly
motor nerve of the pharyngeal plexus
vagus
sensory nerve of the pharyngeal plexus
glossopharyngeal
greater palatine artery is a branch of the ___ ___ artery
descending palatine
lesser palatine artery is a smaller branch of ___ ___ and anastomoses with the ___ ___ branch of the facial artery
descending palatine
ascending palatine
palatine veins drain into the ___ ___ ___
pterygoid venous plexus
___ ___ nerves supplies glands of most of the hard palate
greater palatine nerve
___ ___ nerve supplies the soft palate
lesser palatine
_____ nerve supplies the mucous membrane of the ant part of the hard palate
nasopalatine
all muscles of the palate are supplies by the ___ ___, except for the ___ ___ ___
pharyngeal plexus
tensor veli palatini
____: mobile muscular organ that can assume a variety of shapes and positions
tongue
tongue is partly in the ___ ___ and partly in the ___
oral cavity
oropharynx
5 functions of the tongue
swallowing articulation mastication taste oral cleansing
shape of the genioglossus
fan shaped
main bulk of the tongue
origin of the genioglossus
mental spine of mandible
insertion of the genioglossus
dorsum of tongue and bod of hyoid bone
action of the genioglossus
protrudes the tongue and depression of tonguw
action of the hyoglossus
depress sides of tongue
origin of the hyoglossus
body and greater horn of hyoid bone
insertion of the hyoglossus
inferior aspect of lateral part of tongue
shape of the hyoglossus
thin, quadrangular
shape of the styloglossus
small, short, triangular
origin of the styloglossus
styloid process, stylohyoid ligament
insertion of the styloglossus
sides of tongue posteriorly
action of styloglossus
raises and post retracts tongue during swallowing
action of the palatoglossus
elevate post sides of the tongue during swallowing and retraction
shape of the palatoglossus
narrrow, crescent shaped
origin of the palatoglossus
palatine aponeurosis of soft palate
insertion of the palatoglossus
enters posterolateral tongue transversely blending with intrinsic muscles
all muscles ending is -glossus are innervated by the ____ nerve, except the ____
hypoglossal
palatoglossus
palatoglossus nerve innervated by the ____
vagus
____ muscle sticks the tongue out
hypoglossus
4 extrinsic muscles of the tongue
genioglossus
hyoglossus
styloglossus
palatoglossus
4 intrinsic muscles of the tongue
superior longitudinal
inferior longitudinal
transverse
vertical
shape of the superior longitudinal muscle of the tongue
thin layer deep to mucous membrane of dorsum
action of the superior longitudinal muscle of the tongue
curls tongue longitudinally upward, elevating apex and sides of tongue; shortens tongue
shape of the inferior longitudinal muscle of the tongue
narrow band close to inferior surface
action of the inferior longitudinal muscle of the tongue
curls tongue longitudinally downward, depressing apex; shortens tongue
shape of the transverse muscle of the tongue
deep to superior longitudinal muscle
action of the transverse muscle of the tongue
narrows and elongates tongue; protrudes tongue
shape of the vertical muscle of the tongue
fibers intersect transverse muscle
action of the vertical muscle of the tongue
flattens and broadens tongue
glossopharyngeal nerve carries what 2 fibers
GSA
SSA
lingual nerve carries what fiber
GSA
chorda tympani carries wat fiber?
SVA
the fence muscle of the tongue?
hypoglossus
why is the hyoglossus muscle called the fence muscle
it separates the lingual artery and vein
lingual artery is ___ to the hyoglossus
internal
lingual nerve is ____ to the hyoglossus
external
carcinoma of the tongue is very dangerous bc…
malignant tumors can travel through vessels causing metastication in neck region
superior deep cervical lymph nodes are deep to the ___ muscle
SCM
if there is an infection or inflammation the lymph nodes become ___ and ___
tender
enlarged
3 primary salivary glands
parotid
submandibular
sublingual
parotid gland is innervated by the ___ nerve that comes from the ___ gg
auriculotemporal
otic
submandibular and sublingual glands are innervated by nerves from the ____ gg
submandibular
salivary glands secrete mucous to bind the __
bolus