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33 Cards in this Set
- Front
- Back
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What layer border the lumen of the digestive track?
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mucosa
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What three layers make up the mucosa?
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epithelium, lamina propria, muscularis mucosa
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What layer is under the mucosa?
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submucosa
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What layer is under the submucosa?
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muscularis externa
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What layers make up the muscularis externa?
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inner-circular
outer-longitudinal |
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What layer is under the muscularis externa?
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serosa/adventitia
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What glands are found outside the GI tract?
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salivary glands (sometimes), liver, pancreas
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What parts of the oral cavity have lining mucosa?
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lip, cheek, floor of mouth, ventral tongue, soft palate
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What are the mucosal and submucosal properties of the lining mucosa?
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epithelium- non keratinized
submucosa contains salivary glands |
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What parts of the oral cavity have masticatory mucosa?
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hard palate, gingiva
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What are the mucosal and submucosal properties of masticatory mucosa?
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epithelium-keratinized, parakeratinzed
submucosa is absent |
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What parts of the oral cavity have specialized mucosa?
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ie filliform, fundiform etc
dorsal surface of tongue |
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What are the properties of filiform papilla
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keratinized epithelium
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fungiform papilla properties
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non keratinized epithelium
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circumvallate papilla properties
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non keratinized epithelium w/ most apparent taste buds and von Ebner's salivary gland
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How can you differentiate the vermillion border from the oral lining mucosa?
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vermillion border does not have an salivary glands and dilated vessels
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When does the cementum turn cellular?
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as it gets closer to the root
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What do ameleoblasts do, what do they look like and where are the found?
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Function- lay down new enamel
Looks- tall row of columnar cells w/ all the nuclei in a row Found- right above the enamel in developing teeth |
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What type of papilla have abnormalities that lead to two distinct condition, what are the abnormalities?
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Type: filiform papilla
Conditions 1) hairy tongue- over keratinized 2) geographic tongue- under-keratinized |
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What are the major salivary glands?
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parotid, sublingual, and submandibular
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What glands secrete the most and second most amount of saliva
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most- submandibular
second most- parotid |
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What ions make up saliva?
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1) bicarb
2) K+ 3) NaCl |
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What is the pH of saliva
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7.0
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What do serous demilune cells do?
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Coverup mucous acinus
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What is the characteristic of serous acini?
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darker staining serous secretions
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What is the characteristic of mucous acinus?
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ligther stainign mucous glands
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What is the composition of a submandibular gland?
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mixed, but MOSTLY serous cells
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What is the composition of a sublingual gland?
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mixed but mostly mucous
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What is the composition of parotid gland?
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homogenous serous acinus, but also contains lots of fat cells
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What is the characterisit of intercalated ducts?
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simple cuboidal
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What is the characteristic of striated ducts?
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simple columnar, apical striations w/ not much CT surroundings
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What is the characteristic of interlobular duct?
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pseudostrat epithelium and are localized with a lot of connective tissue in surrounding
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What is the role of striated ducts in saliva production?
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creates hypotonic saliva
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