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93 Cards in this Set
- Front
- Back
Mucosa is comprised of 2 layers, name them.
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1. epithelium
2. lamina propria (CT) |
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Name the 3 types of mucosa in the oral cavity.
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1. lining
2. masticatory 3. special |
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Which types of mucosa in the mouth are keratinized?
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masticatory and special
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T or F: special mucosa is both keratinized and non-keratinized?
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True
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T or F: masticatory mucosa can be para-keratinized or ortho-keratinized?
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True
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T or F: basal lamina and basement membrane are synonymous?
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True
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______________ cells produce the lamina lucida of the basal lamina.
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epithelial
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Major component of lamina lucida.
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laminin
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Lamina densa is composed of type __ collagen.
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IV
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epithelial cells attach to lamina lucida via __________ and ____________.
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hemidesmosomes; anchoring filaments
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lamina propria attaches to lamina densa via _______________.
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type VII collagen (anchoring fibrils)
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Type __ collagen anchors lamina propria to lamina densa via type __ collagen fibrils.
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I; VII
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Rete pegs are part of the (epithelium/lamina propria)?
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epithelium
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Papillary layer is a (LP/epithelial) layer?
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LP
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Which layer is deep to the papillary layer?
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reticular layer
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T or F: the reticular layer is composed of large, mesh like collagen fibers and connects the LP to tissue beneath?
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True
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Rete pegs will be longer in (keratinized/non-keratinized) tissue?
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keratinized
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What are a-c?
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a- epithelium
b- basal lamina c- lamina propria |
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Capillary network of oral mucosa are found within the (papillae/rete pegs)?
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papillae
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Number of capillary loops in oral mucosa is (greater/less) than in the skin?
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greater
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In the cheek, each papilla has (one/multiple) capillary loops while the tongue papillae have (one/multiple) loops?
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one;multiple
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Blood flow in the oral mucosa is greatest where?
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the gingiva
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Blood flow in the oral mucosa is (greater/less) than the skin?
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greater
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The pink color of the oral mucosa is due to ______________?
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increased number of capillaries
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T or F: In the oral mucosa, there are no arteriovenous shunts, but there are numbers anastomoses between the arterioles and capillaries?
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True
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What contributes to quick healing in the oral mucosa?
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Large available blood flow (lots of capillaries)
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In this picture, what do the colors represent? (be specific)
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Yellow - lining mucosa (non-keratinized)
Blue- Masticatory mucosa (keratinized) Green - Special mucosa (can be keratinized or non-keratinized) |
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Where is special mucosa found?
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dorsal surface of tongue
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The ventral surface of the tongue has what type of mucosa?
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lining
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Gingiva is comprised of what type of mucosa?
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masticatory
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The soft palate is ___________ mucosa, while the hard palate is ___________ mucosa?
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lining;masticatory
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name 4 locations of lining mucosa?
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1. ventral tongue
2. cheeks 3. soft palate 4. lips |
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Lining mucosa will have (many/few) CT papillae?
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few
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What holds mucosa to the underlying muscle?
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submucosa
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T or F: Lining mucosa has no keratinocytes?
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False, they get larger as they move towards the surface
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Lining mucosa has a _______ appearance?
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frothy
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Cells in the lining mucosa have _________ filled sacs which push cytoplasmic components to the (center/periphery) of the cell?
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fluid;periphery
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Fluid filled cells in the lining mucosa act as __________ to underlying cells?
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cushion
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Name the fingerlike projections depicted at 'A'
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desmosomes
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Name the type of mucosa.
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lining (note the white, "frothy" cells at top)
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Name two places where masticatory mucosa is found?
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gingiva and hard palate
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T or F: thickness of masticatory mucosa is indicative of attrition?
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True
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______ papillae in masticatory mucosa are tall and thin.
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CT
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___________ usually underlies masticatory mucosa.
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bone
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Name the two forms of masticatory mucosa.
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1. orthokeratinized stratified squamous
2. parakeratinized stratified squamous |
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Is orthokeratinized or parakeratinized more common?
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ortho
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Where is parakeratinized mucosa found?
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non-attached free gingiva
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masticatory mucosa will have (small/large) rete pegs?
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large
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What type of mucosa? What are a-f?
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masticatory
a- cornified layer b- epithelium c- lamina propria d- underlying bone e- CT papilla f- rete peg |
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What are a-g? specific type of mucosa?
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a- cornified layer
b- granular layer c- epithelium d- CT papilla e- rete peg f- lamina propria g- bone orthokeratinized mucosa (has a granular layer, parakeratinized does not) |
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Name the 4 layers of orthokeratinized epithelium?
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1. stratum corneum
2. stratum granulosum 3. stratum spinosum 4. stratum basale |
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Cells in the stratum corneum are (dead/alive)?
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dead
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T or F: Cells in the stratum corneum have a nucleus?
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False
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Cells in the stratum corneum are filled with ____________?
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lipid
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Thickness of the stratum corneum is dependent on _____________ _______?
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mechanical stress
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Stratum corneum is compose of flattened __________?
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squames
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Stratum granulosum is __ to __ cells deep.
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2-4
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Cells in the stratum granulosum are filled with ___________, which contribues to their dark _______?
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keratohyalin granules; color
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name the strata.
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a- stratum corneum
b- stratum granulosum c- stratum spinosum d- stratum basale |
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T or F: Dead cells in parakeratinized mucosa retain their nuclei and do NOT comprise a stratum corneum?
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True
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T or F: There is a granular (stratum granulosum) layer in parakeratinized mucosa?
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False
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If a nuclei is shrunken and degenerated, it is ___________? This occurs in ____________ mucosa?
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pyknotic;parakeratinized
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T or F: there is no submucosa under specialized mucosa
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True
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Papillae in specialized mucosa have two possible functions, what are they?
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mechanical, taste
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T or F: special mucosa can be covered by keratinized or non-keratinized stratified squamous?
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True
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Name the four types of lingual papillae?
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filiform, fungiform, circumvallate, foliate
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Where is the sulcus terminalis located?
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behind the circumvallate papillae
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name the type of papilla?
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filiform
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Which is the most common type of lingual papilla?
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filiform
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T or F: filiform papillae are keratinized?
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True
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T or F: filiform papillae have many taste buds?
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False, no taste buds
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T or F: filiform papillae have a mechanical function and have sensory nerve ending to feel food.
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True
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__ __________ do not extend into the filiform papillae.
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CT papillae
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Fungiform papillae are what shape?
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mushroom
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Fungiform papillae are more numerous in (younger/older) individual?
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younger
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T or F: Fungiform papillae have a thick layer of keratinized tissue?
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Fase, thin
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Keratinization of fungiform papillae (thin/thicken) with age?
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thicken
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Name three things fungiform papillae can detect?
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1. sweet
2. salty 3. sour |
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Which papillae are the largest?
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circumvallate
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Circumvalate papilla are associated with what gland?
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von Ebner
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What is the purpose of the von Ebner glands?
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to flush bitter stimuli from the trough which holds the taste buds
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Taste buds are composed of three types of cells, what are they?
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1. taste cells
2. supporting cells 3. basal cells |
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Which cells in the taste bud regenerate the other cells?
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basal cells
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Which cells line the taste pore?
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taste cells
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What is a taste pore?
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portion of taste bud which contacts the oral cavity
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cells in taste pore are protected by a _______________?
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taste pore substance
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What is stimulated on the receptor cell in a taste pore?
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microvilli
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Nerves contact taste cells at the (basal/apical) surface?
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basal
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5 yr survival rate for oral/pharynx cancer?
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59%
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Tobacco causes __% of head and neck cancers?
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85
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what two substances are the greatest contributors to head and neck cancers?
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tobacco and alcohol
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_________ American men and women developed cancer in 2005?
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39,000
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What is the #1 site for oral cancer?
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ventral side of tongue
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