Mandible - Mouth cavity -Palates-Tongue-lips Flashcards
includes general innervation of the GT
Mention the types of oral mucosa
Masticatory , linning , specialized (taste buds )
which surfaces does the masticatory mucosa lines
hard palate , gums , dorsal surface
what type of salivary glands present in the lamina propria of the lip
labial salivary glands
mention the epithelium of the mucus surface of the lip as well as the red margin
thin keratinized stratified squamous epithelium –>red margin
non keratinized —> mucous
mention the mucosa of the dorsal and ventral surface of the tongue
dorsal - masticatory - keratinized - firmly attached
ventral - lining- non keratinized - loosely attached
whats the main bulk of the lips ?
orbicularis oris muscle
whats the main bulk of the tongue ?
striated muscle fibers
Define the lingual papillae and its epithelium
its the anterior 2/3 of the dorsal surface of the tongue- epithelium is keratinized stratified
function of the lingual papillae
it increases the mucus surface which comes in contact with the food
compare between the filiform & fungiform lingual papillae in number , distribution , taste buds
filiform: numerous , arranged in rows parallel to the gustatory line , absent taste buds
fungiform :Few , scattered between the filiform papillae but most numerous at the tip , few taste buds and apical
which lingual papillae has a vascular connective tissue that is seen as red dots
Fungiform
Mention the Largest lingual papillae that could be seen by the naked eyes
circumvallate
where does the ducts of vons ebners salivary glad open ?
at the bottom of the circumvallate
what type of secretion does vons ebners gland secrete ?
Serous secretion
how does the coated tongue forms ?
the keratinized epithelium of the filiform papillae is continuously shed in saliva . During gastro disturbances and fevers this shed is delayed causing accumulation with the bacteria
Mention the function of the vons ebners secretion with the circumvallate papillae
- facilitate perception of food
- flow of secretion
- lypaze enzyme
type of secondary papillae in folliate papillae ? ( short or long- absent )
long
site of taste buds
embedded in the epithelium of lingual papillae and limited is the epi of the palate and epiglottis
Types of cells in taste buds
supporting , neuroepithelial , basal cells
mention the name of the taste cells or taste receptive cells ? and what facilitates its function
Neuroepithelial cells as it has long apical microvilli ( gustatory hair ) that open to the surface of the epithelium through gustatory openings
mention the location of the basal tastebud cell and its function
between the bases of the taste buds cells and it differentiate to replace the neuroepithelial cells every 10 days
during the closure of the jaw , the vestibule is connected with the mouth cavity through ?
Through an interval behind the last moral tooth
mouth cavity is bounded posteriorly by ?
isthmus of faeces ( which connects it with the pharynx )
floor of the mouth cavity ?
mylohyoid muscle
mention the origin & insertion of the posterior belly of the digastric muscle ?
from the mastoid notch and inserted in the intermediate tendon which is inserted into the greater horn of the hyoid bone
origin of the anterior belly of the digastric muscle and its nerve supply
digastric fossa
NS: nerve to the mylohoid which is the inferior alveolar branch of the mandibular nerve
Nerve supply of the posterior belly
facial nerve
Action of the digastric muscle
depression of the mandible or elevation of the hyoid bone
origin and insertion of the mylohyoid muscle
o: mylohoid line of the mandible
I: posterior fibers inserted in the hyoid bone
anterior fibers inserted in the fibrous Raphe in the midline
Origin and insertion of the geniohyoid muscle
O: inferior genial tubercle of the mandible
I: hyoid bone
Nerve supply of the mylohyoid muscle
inferior alveolar branch of the mandibular nerve
nerve supply of the geniohyoid muscle
C1 component of the hypoglosses nerve
general action of the mandibular muscles
depression of the mandible or elevation of the hyoid bone during swallowing
which palate forms the floor of the nasal cavity and is surrounded by the alveolar arch
hard palate
contents of the soft palate
muscles , palatine aponeurosis , nerves , vessels
which tendon of muscle forms the palatine aponurosis ?
tenser palati muscle
fibrous sheet attached to the posterior border of the hard palate and gives attachmtment to all soft palate muscles
Palatine aponeurosis
It ends posteriorly with uvula and covers the lateral sides of the pharynx
Soft palate
Nerve supply and action of the tensor palati muscle
trunk of the mandibular nerve , tenses / tightens the palate
Nerve supply and action of the levator palati muscle
Cranial part of the accessory nerve of the pharengeal plexus
A: elevation of the palate
which two muscles open the auditory tule to equalize the pressure between the middle ear and the nasopharynx
levator and tensor palatine muscles
Action of the Uvula
retract and elevate uvula
nerve supply of the soft palate muscles
cranial part of accessory nerve except tensor palati muscle
mention sensory nerve supply of the hard palate
greater palatine and nasopalatine nerve
mention sensory nerve supply of the soft palate
Lesser palatine and glossopharyngeal nerve
mention Parasympathetic supply of the palates ( secretion & taste sensation)
through lesser palatine nerve via sphenopalatine ganglion
The blood supply of the palates through the greater palatine artery is a branch from
Maxillary artery
The blood supply of the palates through the ascending palatine artery is a branch from
Facial artery
The blood supply of the palates through the palatine branch of which artery
acsending pharengeal artery
Mention the venous drainage of the palates
pterygoid and pharyngeal plexus of veins
lymphatic draingae of the soft palate
Deep cervical and retropharengeal lymph nodes
lymphatic drainage of the hard palate
submandibular lymph nodes
mention lymphatic drainage of the tip of the tongue
submental nodes
mention lymphatic drainage of the sides of the tongue
submandibular lymphnodes
mention lymphatic drainage of the centre of the tongue
deep cervical lymph
mention lymphatic drainage of the posterior 1/3 of the tongue
deep cervical
mention the venous drainage of the tongue and its origin
lingual vein draining into internal jugular vein
Mention blood supply of the tongue
lingual artery , ascending pharyngeal artery , Tonsillar branch of facial artery
nerve supply of the anterior 2/3 of the tongue ? ( general sensation , taste , motor )
general sens: through the lingual nerve
taste sense: chorda tympani
motor : hypoglossal nerve
nerve supply of the posterior 1/3 of the tongue ? ( general sensation , taste , motor )
general sens: glossopharyngeal nerve
taste sense:
motor : hypoglossal nerve
nerve supply of the most posterior part of the tongue ? ( general sensation , taste , motor )
general and taste sense: internal laryngeal branch of the vagus
motor : hypo glossal nerve
Numerate the muscles of the tongue and their nerve supply
styloglossus muscle , palatoglossus muscle , genioglossus muscle , hyglossus muscle
NS: hypoglossal nerve
whats is the lateral structure to the frenulum of the tongue
deep lingual vein
what structure is lateral to the deep lingual vein
fimbriated fold
apex of the sulcus terminalis that separates the posterior from the anterior of the dorsum of the tongue
foramen caecum
function of the intrinsic or striated muscle fibres of the tongue
narrowing-transverse
shortning-longitudnal
thinning-vertical
action of the styloglossus muscle
it draws the tongue upwards and backwards
action of the genioglossus muscle
with the opposite muscle ( left and right ) it protrudes the tongue and also depresses its median part
origin and insertion of the genioglossus muscle
superior genial tubercle of the tongue
insertion: whole body of the tongue
action of the hyoglossus muscle
depression of the tongue
