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Oral Lining Mucosa
- buccal, labial, alveolar, floor ofmouth, ventral tongue surface, soft palate
- soft, moist, able to strech and compress, cushion
- nonkeratineized epithelium wiwth smooth interface
- few rete ridges
- CT papillae with elastic fibers in the lamina propria and submucosa
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Masticatory Mucosa
- Attached gingiva, hard palate, dorsal tongue surface
- Rubbery surface texture and resiliency, serving as a firm base
- Keritinized epithelium and interdigitated interface
- many rete ridges
- CT papillae with thin layer of submucosa or none
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Specialized Mucosa
- dorsal tongue surface
- lingual Papillae
- discrete structures of lamina propria and epithelium
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Parakeratinization
- immature form of orthokeratinization
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Hyperkeratinization
tissue response to friction or trauma
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Filiform
- Most common on body
- fine-pointed cones giving velvety texture
- thick layer of keritinized epithelium
- NO TASTE BUDS
- mechanical
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Fungiform
- lesser numbers
- mushroom shaped small red dots
- thin layer of keritinized epithelium
- taste buds superficial
- TASTE
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Foliate
- 4-11 vertical ridges on lateral surface of posterior tongue
- leaf shaped
- keritinized epithelium w taste buds superficial
- TASTE
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Circumvallate
- 7-15 large raised mushroom-shaped structures anterior to sulcus terminalis
- similar histo to fungiform, deep to tongue surface, taste buds in base surrounded by trough
- von Ebner's minor salivary glands in submucosa
- TASTE
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Von Ebner's Glands
Minor serous salivary glands that flush trough around the circumvallate papilla to improve taste discrimination
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Junctional Epithelium:
- Attachment of the Gingival Tissue to Tooth by Hemidesmosomes
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Parotid
- Largest, encapsulated
- parotid duct (Stenson's) max 2nd molar buccal mucosa
- Short Striated ducts
- Long intercalated ducts
- Mainly serous Acini
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Submandibular
- Intermediate, encapsulated
- Submandibular duct (Wharton's) near lingual frenum on floor of mouth
- Long striated ducts
- Short intercalated ducts
- Serous and mucoserous acini
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Sublingual
- smallest, no capsule
- Sublingual duct(Bartholin's) same area as submandibular, may have additional ducts in submandibular folds
- rare or absent striated ducts
- absent intercalated ducts
- mainly mucous with some mucoserous acini
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Salivary Gland Comparison
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Functional Classification of Oral Mucosa
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