Lecture 11- Oral Cavity and Palate Flashcards
Posterior extent of oral cavity
oropharyngeal isthmus
Orbicularis oris is innervated by ..
CNVII
The 1st arch at the posterior etent of the oral cavity is the…
palatoglossus
The 2nd arch in the oral cavity is…
palatopharyngeous (which is considered part of the oropharynx as well as the palatine tonsil)
… and… are the predominant mm. of the soft palate along with the uvular muscle
tensor veli palatini and levator veli palatini
The tensory veli palatini muscle is between the…
medial and lateral pterygoid plates
The inferior extent of the tensor veli palatini muscle/where the tendon connects hooks underneath the…
hamulus
Tensor veli palatini is vertical and across the soft palate is the…
aponeurosis
From posterior view of soft palate you can see…. muscle which is posterior and medial to … muscle.
levator veli palatini
tensor
The… artery which is a branch of… is the vascular supply of the palate
descending palatine (greater and lesser palatine) maxillary
The greater palatine artery supplies the… palate
anterior/hard
The lesser palatine artery supplies the… palate
posteior/soft
The … artery, a branch (from facial a.) also supplies the palate. Along with…. artery which is a branch of ascending pharyngeal artery (from ECA)
- ascending palatine
- palatine
Venous drainage of the palate is via the
pterygoid and pharyngeal plexuses
The nasopalatine nerve will come out of the incisive foramen to anastomose with… on the palate
greater palatine nerve
The greater palatine artery will go through the incisive foramen to anastomose with… in the nasal cavity
sphenopalatine artery
Innervation of the palate (sympathetic and parasympathetic) come from greater petrosal (CNVII) and deep petrosal into the ganglion and then to the palate through which nerves?
nasopalatine
greater palatine
lesser palatine
What nerve innervates Tensor veli palatini muscle? This soft palate innervation is different from all the others
CNV3-mandibular
embyrologic 1st arch
The Levator veli palatini, palatoglossus, palatopharyngeus, uvular and salpingopharyngeus are all soft palate mm. that are innervated by…
CNX - Vagus
embryologic arches 4-6
The palatine tonsils have 5 arterial branches supplying it:
tonsillar branches of: 1. Lesser palatine 2. Ascending pharyngeal 3. Ascending palatine 4. Facial Dorsal Lingual
Palatine tonsils may be removed but heavy bleeding may occur. Bleeding from… is common
paratonsillar v.
CN…. lies on lateral pharyngeal wall of tonsillar bed, it is on its way to…. and has a tonsillar branch
- IX (glossopharyngeal)
- posterior 1/3 of tongue
Submandibular duct is also called… duct
wharton’s
The opening of the submandibular duct is located at the …
sublingual caruncle
Submandibular gland is… and extraoral
intraoral
Submandibular duct stays medial to… gland
sublingual
The … nerve emerges between the two pterygoid mm. and enters oral cavity beneath superior constrictor and then will cross the ..duct twice (goes underneath first)
- lingual
- submandibular
Lingual nerve is a branch of..
CNV3
The submandibular ganglion is providing…. innervation from… to…. glands. It is at the level of…
- parasympathetic
- chorda tympani (from VII)
- sublingual and submandibular
- 3rd mandibular molar
Sympathetic fibers to sublingual and submandibular glands are from…
external carotid plexus
Chorda tympani (from VII) carries…. fibers and synapses in the… ganglion
- presynaptic parasympathetic
- submandibular
The submandibular ganglion is suspended from… nerve by 2 or more short nerve branches
Lingual
The hypoglossal nerve is deep to… and…. mm.
-posterior belly of digastric and stylohyoid
The hypoglossal nerve runs anterior between … gland and … muscle
- submandibular
- hyoglossus
Hypoglossal nerve is… to lingual nerve and … to mylohyoid muscle and it ends in … tongue to provide… innervation
- inferior
- superior
- posterior
- motor
Parotid gland is innervated by…
CNIX
Glossopharyngeal n. travels between… and…. runs lateral to… to enter pharynx. It then continues anteriorly through the…. and ends in … tongue to receive sensory innervation (general sensory and special sensory)
- superior and middle constrictor mm.
- stylopharyngeus
- tonsillar region
- posterior
Extrinsic mm of the tongue (4)
palatoglossus
styloglossus
hyoglossus
genioglossus
Intrinsic mm. of tongue
superior longitudinal
inferior longitudinal
vertical
transverse
Palatoglossus is innervated by… which is also innervating most of soft palate except tensor which is innervated by
CNX
CNV3
The intrinsic muscles of the tongue are innervated by … as well as the extrinsic mm. (genioglossus, hyoglossus, styloglossus) except palatoglossus which is innervated by..
CNXII
CNX
The genioglossus muscle is … and fused in midline and serves to… the tongue
- paired
- protrude
…. of CNXII affects straight protrusion of the tongue
unilateral paralysis
A lesion of CNXII is a LMN and it will result in a deviation of tongue toward… this is because the intact side protrudes more than affected side
paralyzed side
Bilateral paralysis of CNXII results in … or more seriously may cause…
- inability to protrude tongue
- tongue to fall back and occlude airway (suffocation)
Oral cavity arterial supply:
- … supplies most superficial strutures
- …. supplies buccinator
- … supplies most of deeper structures
- facial a.
- maxillary a.
- lingual a,
The lingual artery has these 3 branches
- dorsal lingual a.
- deep lingual a.
- sublingual a.
The first branch of lingual artery… will branch first
dorsal lingual a.
Lingual a. will bifurcate with… which will go anterior into body of anterior tongue and… which will stay deep and go to anterior
deep lingual
sublingual
The…. a branch of… receives taste from anterior 2/3 of tongue and then travels with lingual n.
chorda tympani
CNVII
The… nerve receives taste from 1/3 posterior tongue
CNIX (glossopharyngeal)
The… nerve receives taste from root of tongue and epiglottis
CNX (vagus)
The… nerve branch of… receives general sensory for anterior 2/3 of tongue
lingual
CNV3
The… nerve receives general sensory for 1/3 posterior tongue
CNIX (glossopharyngeal)
The… nerve receives general sensory for root of tongue and epiglottis
CNX (vagus)
The… nerve is the temrinal branch of IAN
mental
The primary epithelium of the oral cavity is…. epithelium
nonkeratinized stratified squamous
In certain areas of the oral cavity, there is a keratinized and parakeratinized (transition area) stratified squamous epithelium. These areas include…
hard palate, gingiva and dorsum of tongue which is part of the masticatory mucosa
The filiform papillae are most… , they are highly …. and … in shape which face posteriorly. Do they have tastebuds?
- numerous
- keratinized
- conical
- NO
The fungiform papillae are less…. and they are lightly…. and red
Do they have tastebuds?
- numerous
- keratinized
- YES
The foliate papillae/ folds are found… but are usually lost through…
Are they keratinized?
Do they have tastebuds?
- on lateral tongue
- adolescence
- no
- YES
The vallate (circumvallate) papillae are… and there are only about… of them and they have a …. around them.
Are they keratinized
Do they have tastebuds?
large 8-12 "moat" -no or only slightly -YES
The taste bud has… cells which receive the chemoreception, and around them are… cells and at then at the apex is a… at the base are… cells (stem cell layer)
- neuroepithelial/gustatory
- supporting
- taste pore
- basal
Enamel is made by and what is the predominant substances
ameloblasts
calcium HA
Dentin is produced by
odontoblasts
The periodontium includes…
cementum
periodontal ligaments
alveolar bone
gingiva
The major salivary glands are … paired and produce…% of saliva
- 3
- 90%
The minor salivary glands are… and produce.. % of saliva
- numerous
- 10%
The salivary glands have two major cell types
serous
mucous
The… cells are polarized, protein-secreting, pyramidal, have zymogen granules and are very bsaophilic (RER and ribosomes)
serous
The.. cells produce hydrophilic glycoprotein mucins and are cuboidal or columnar in shape
mucous
The… cells are within basal lamina of secretory unit and contrats and sccelerates secretion and prevents distension when lumen fills
myoepithelial
An… is a blind sac composed of secretoy cells. there are 3 kinds:
- acinus
- serous, mucous, mixed
Serous acini are generally… shaped
spherical
mucous acini are generally … shaped
tubular
In traditional fixation methods, mucous acini appear to have a cap of … which is an artifact
serous cells (serous demilunes)
The salivon is composed of…
acinus
intercalated duct
striated duct
excretory duct
The parotid gland is mostly … cells in the acinus only
serous
The submandibular gland is mostly… cells but has some… too
serous
mucous
The sublingual gland is mostly…. cells with only a small amt of… cells
mucous
serous
The ducts of glands are continuous with acini and there are 3 segments:
intercalated ducts
striated ducts
excretory ducts
The… gland is largest, is extraoral and has a long excretory duct which comes out at the… papilla located at… It has … acinar, mostly… cells. And you can see …cells which you dont see in other glands
- parotid
- parotid papilla
- 2nd molar
- branched
- serous
- adipose
The… gland is located…and… has a long excretory duct which terminates in the… and has … acinar and what kind of cells?
- intraoral
- extraoral
- sublingual caruncles
- branched tubular
- mixed but mostly serous
The… gland is the smallest of the 3 major and is located in the… it has multiple ducts in the… fold and is … acinar. It has … cells
- sublingual
- floor of mouth/intraoral
- sublingual
- branched tubuloacinar
- mixed but mostly mucous
