Flashcards in Oral Mucosa - TRUMP Deck (45):
Fxs of the oral mucosa.
-Separates and protects deeper tissues from oral
-Temp, touch, pain, taste
-Reflexes: swallowing, gagging
What are the types of epithelium?
-Distended (Pressed down)
Stratified squamous epi has underlying _______ ______.
Stratified squamous epithelium lines what 4 places?
T/F - The oral mucosa covers all oral surfaces except the teeth.
What are the 2 layers of the oral mucosa?
Stratified squamous epithelium
- Can be:
-CT that supports the epi
—Papillary - Higher
—Reticular - Lower
Buccal, vestibular, soft palate are what? Non, ortho, or para?
Diff b/t ortho and para?
Ortho - No nuclei
-Granular cell layer
Para - Nuclei
-No granular cell layer
What are the stratum layers?
What are three characteristics of oral mucosa?
Prominent basal lamina
-separates epi and lamina propria
Lack of Langerhans cells
-Mucosa susceptible to potential allergens
-These cells typically fight off foreign things, w/o those, allergies result
What is the fx of lamina propria?
Mechanical support to the epi and carries blood vessels/nerves
Tell me more about the papillary layer.
Directly under epithelial layer, loose CT, more cells
Tell me more about the reticular layer.
Dense CT fibrous layer located under papillary layer
T/F - Oral mucosa of the cheek has a thinner lamina propria than the outer surface of the lip.
T/F - Sublingual mucosa has the thinnest epithelium of the oral cavity, great for drug delivery.
T/F - Alveolar mucosa has small rete pegs, gingiva has tall rete pegs.
Lining mucosa is what?
Masticatory is what?
Specialized is what?
Lining - NON-KERATINIZED
Masticatory - KERATINIZED
Specialized - KERATINIZED
Lining mucosa covers what structures?
Floor of mouth
Masticatory mucosa covers what?
Specialized mucosa covers what?
Dorsal surface of the tongue
What is the mucocutaneous junction?
Transition area b/t the skin and the oral mucous membrane
What is the vermillion border?
Line separating vermillion zone and skin
What is the vermillion zone?
Thin, keratinized epi
Long CT papillae
Numerous capillary loops in papillae
What is the intermediate zone?
B/T vermillion zone and labial mucosa
Parakeratinized stratified squamous epithelium
What are the boundaries of the free gingival margin?
Free gingival groove
T/F - Typically, the epithelium of the free gingiva is kera strat sq, but can also be para or non.
T/F - Sulcular epithelium is nonkeratinized and lacks rete pegs.
What are the boundaries of the attached gingiva?
Free gingival groove (coronally)
Mucogingival junction (apically)
-Marked transition b/t epi of the attached gingiva (masticatory) and that of the alveolar mucosa (lining)
*Epi is kera ss and typically is stippled
LOOK AT SLIDE 41 FOR GOOD PICTURE.
What is the interdental papilla?
Occupies the embrasure b/t teeth below the contact
*Kera ss epi
What is the col?
Depression b/t peaks of the interdental papilla (below the contact)
*NONkera ss epi
T/F - Masticatory mucosa covers the hard palate.
-Palatine or median raphe
-Kera ss epi
T/F - Hard palate has mucoperiosteum.
*Lamina propria attached directly to the underlying bone, no submucosa
Specialized mucosa is where?
*Kera or nonkera
What are the 4 papillae of the tongue?
-No taste buds
-Taste buds on lateral surface
Hairy tongue is elongation of what?
What is the dentogingival junction?
Junction b/t attached gingiva and tooth
-enamel or cementum
What are the 2 components of the dentogingival junction?
-Floor of gingival sulcus
T/F - A healthy gingival sulcus should NOT have rete pegs.
What do rete pegs mean?
T/F - Cells of the sulcular epi are joined TO EACH OTHER by desmosomes.
T/F - The JE has hemidesmosomes on both surfaces.
Gingival and sulcular epi mature due to what?
Superficial, intructive influences
JE does NOT MATURE b/c of deeper, permissive influences
Hemidesmosomes on both surfaces of the epithelium
T/F - Gingival epi is NOT supported by CT containing inflammatory cells.
T/F - Sulcular and JE ARE supported by CT with inflammatory cells.
*These DO NOT KERATINIZE