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