Oral Mucosa and Salivary Glands Flashcards
What is mucus?
Mucus is a viscous colloid, containing in organic salts, antiseptic enzymes, immunoglobulins, glycoproteins, and gel forming mucins
What is an example of an antiseptic enzyme found in mucus?
LYSOZYMES
What’s an example of a glycoprotein found in mucus?
Lactoferrin
Oligosaccharides interact with _______ while mucins are _________.
Water
Hydrophobic
What are the types of mucous membranes?
We have oral mucosa.
And we have body mucosa lining, the gastrointestinal tract, nasal passages, the oral cavity and other organs that communicate with the outside world
What is a mucus membrane?
A mucus membrane is an epithelial tissue that secretes mucus and lines, many body cavities, tubular organs, including the gut and respiratory passages
In the oral cavity we will find _______ and __________.
Oral mucosa and Oral Mucoperiosteum
What are the differences between oral mucosa and oral mucoperiosteum ?
- OMP attaches directly to bone
- OM is mostly your cheeks
- Lamina propria is DENSER in OMP
- OM has a much larger submucosa. OMP does not so it also lacks salivary glads
What is submucosa? Define the type of tissue found here!
A thick layer of fat, nerves, CT, vessels and salivary glands more prominent in Oral Mucosa Proper.
IRCT
Oral mucoperiosteum has a thin submucosa layer if any, rather it attaches to bone
Components of the Oral Mucosa
- Stratified Squamous Epithelium
which is supported by the
- Lamina Propria made of fine IRCT
- Submucosa
What kind of epithelium is present in oral mucosa?
Stratified squamous
What are sebaceous glands and where can they be found?
They make sebum and can be found in submucosa
Instead of submucosa, what does Oral Mucoperiosteum have?
Periosteal which is a layer of CT to attach into bone
Functions of the Oral Mucosa
- Protection
- Sensation
- Secretion
- Taste
The lamina propria can be subdivided into _______ and _________.
Papillary and reticular
Papillary layer looks like projections in the epithelium.
What are two key histological features that tell us we are in the submucosa?
- White fat droplets that are unstained.
- The salivary gland, which appear as a large mass of circular slightly stained cells.
What is the function of the papillary layer of the __________ in the mucosa?
Lamina Propria
Forms junction between epithelium and lamina propria to create the BASAL lamina.
Looks like projections in epithelia!
Blood vessels penetrate the epithelium. True or False
FALSE
What is the mucogingival junction?
Separates alveolar mucus from gingival mucus.
What are the differences between alveolar and gingival mucus?
Alveolar mucosa is NON-Keratinzed and is not attached to the bone so we will find fat and glands.
Below the mucogingival line is gingival mucosa. Gingival mucosa is parakeratinized and as we approach free gingiva towards teeth, they become keratinized.
The strongest gingiva is located where?
Closest to the teeth because it is heavily keratinized.
What is the junctional epithelium?
The portion where gingiva is going to contact enamel and possibly cementum
What is another word for gingival crest?
Marginal Epithelium
What is sulcular epithelium?
Abbuds the enamel portion of the tooth and continues into the junctional epithelium which is where the gingiva touches enamel and possibly cementum
Maintenance of what epithelium is key in ensuring our periodontal pocket says in the _____mm range?
Junctional Epithelium
1-2
The _______ and ______ have sensory receptors for taste!
tongue and pharynx
Where are taste receptors found?
Fungiform Papillae
Foliate Papillae
Circumvallate/Vallate Papilla
What kind of papilla do NOT have taste receptors?
Filiform