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Oral mucosa is composed of_________ overlying a connective tissue proper, or__________
- stratified squamous epithelium
- lamina propria
What are the 3 main types of mucosa found in the oral cavity?
Which type of mucosa has a softer surface texture?
Histologically lining mucosa is associated with what type of epithelium?
nonkeratinized stratified squamous epithelium
The general histological features of lining mucosa allows it to serve in regions in the mouth where a______________base is needed
The moveable base in lining mucosa allows for what 3 things?
What 5 structures in the mouth have lining mucosa?
- buccal and labial mucosa
- alveolar mucosa
- floor of the mouth
- ventral surface of the tongue
- soft palate
In what type of mucosa do surgical procedures usually require sutures for closure?
Normal variant, and visible as small, yellowish elevations on the surface of mucosa, usually lining mucosa
Where will you usually find Fordyce's spots/granules?
true or false. It is easier to inject local anesthetic in lining mucosa
What is a downside of lining mucosa that we discussed in class?
infections spread quickly in it
Masticatory mucosa is noted for what 2 things?
- rubbery surface texture
What 3 structures have masticatory mucosa?
- attached gingiva
- hard palate
- dorsal surface of the tongue
Histologically, masticatory mucosa is associated with what kind of epithelium?
Keratinized stratified squamous epithelium
What are the 2 different types of keratinized epithelium?
Masticatory mucosa that has NO nuclei and is white
What type of mucosa is least common in the oral cavity?
orthokeratinized masticatory mucosa
Orthokeratinized masticatory mucosa protects against what 5 things?
- physical attack
- chemical attack
- microbial attack
- heat loss
Masticatory mucosa that has nuclei
masticatory mucosa that is associated with a higher level of attached gingiva
What does perakeratinized masticatory mucosa protect against? (3)
- bacterial invasion
- mechanical irritation
In what type of oral mucosa are sutures rarely needed after surgery?
true or false. Injections are more difficult to give in masticatory mucosa. Masticatory mucosa has a longer healing time
both statements are true
What might happen to non-keratinized oral mucosa if it is hyperkeratinized?
it may transform into keratinized
Give an example of non keratinized epithelium being hyperkeratinized and transformed into keratinized.
Linea alba occurs as a result of what?
Hyperkeratinization often occurs in response to what?
true or false. In keratinized epithelium, hyperkeratinization may still occur in response to chemical trauma
What are examples of trauma where keratinized oral mucosa can be hyper keratinized?
heat from smoking or hot fluids
true or false. Hyperkeratinization in keratinized mucosa is reversible if the source of trauma is removed
Where is specialized mucosa found? Give an example
- dorsal and lateral surfaces of the tongue
- papilla on tongue
Labial and buccal mucosa is found where?
inner lips and cheeks
What are 5 characteristics of labial and buccal mucosa?
- extremely thick
- opaque pink
- shiny, moist
- stretches easily
In labial and buccal mucosa the mucosa and muscle function as____ ____
Alveolar mucosa is found where?
lines vestibules of oral cavity
What are 5 characteristics of alveolar mucosa?
- thin tissue
- reddish pink
- mobile tissue
- shiny, moist
- loose attachment
What are 5 characteristics of the floor of the mouth and ventral surface of the tongue mucosa?
- extremely thin tissue
- reddish pink
- moist shiny
- function as one unit
What are 3 characteristics of attached gingiva?
- opaque pink with pigmentation
- mucogingival junction
What does the attached gingiva look like when the stippling goes away?
smooth and shiny
What are 2 characteristics of the hard palate?
Which portion of the hard palate is more firm, the medial or lateral portion?
where is the tissue usually taken from for tissue grafting?
the hard palate
What are 2 types of tissue grafting?
- gree gingival graft
- subepithelial graft
What would you like to do?
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