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organ histology final > digestive system pt 1 > Flashcards

digestive system pt 1 Flashcards

1
Q

what type of epithelium is found on filiform papillae?

A

keratinized stratified squamous

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2
Q

what type of epithelium is found on all other papillae?

A

stratified squamous

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3
Q

von ebner glands are found with _____ tongue papillae

A

vallate

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4
Q

taste buds are not found on which tongue papillae?

A

filiform

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5
Q

what do the intrinsic tongue muscles do?

A

change shape of tongue

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6
Q

what is the oral cavity lined with?

A

oral mucosa

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7
Q

what are the 3 types of oral mucosa?

A

Masticatory
Lining
Specialized

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8
Q

where is the masticatory mucosa found?

A

on gingiva and hard palate

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9
Q

what is the surface epithelium of the masticatory mucosa?

A

keratinized or parakeratinized stratified squamous epithelium

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10
Q

superficial cells of parakeratinized stratified squamous epithelium keep what?

A

their nuclei

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11
Q

the lamina propria of the masticatory mucosa has what 2 layers?

A

papillary- thick loose ct

reticular- more dense ct

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12
Q

where is the lining mucosa of the oral mucosa found?

A

soft palate, underside of tongue, floor of mouth, cheeks and lips

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13
Q

what is the surface epithelium of the lining mucosa of the oral mucosa?

A

mostly- nonkeratinized stratified squamous epi.

occasional- parakeratinized stratified squamous epi.

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14
Q

what is the surface epithelium of the lips, vermillion border?

A

keratinized stratified squamous epi.

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15
Q

what areas of stratified squamous epi. are typically thicker?

A

nonkeratinized are thicker than keratinized

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16
Q

the lamina propria of the lining mucosa is made up of?

A

loose ct with blood vessels and nerves

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17
Q

the submucosa of the lining mucosa is made up of?

A

more dense ct

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18
Q

where is the specialized oral mucosa found?

A

on the dorsal surface of the tongue

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19
Q

what is the surface epithelium on the filiform papillae?

A

keratinized stratified squamous

20
Q

what is the surface epithelium on all other papillae?

A

stratified squamous

21
Q

what are the 2 functions of the specialized oral mucosa?

A

move food

taste

22
Q

what is the mucosa of the tongue like?

A

thicker dorsally, thinner and smoother posteriorly

23
Q

what is the function of the von ebner glands of the tongue?

A

produce serous fluid to cleanse the tastebuds

24
Q

what is the lamina propria of the tongue made up of?

A

loose ct; adipose possible

25
Q

what type of glands do the submucosa contain?

A

lingual salivary glands

26
Q

what are the 4 intrinsic muscles of the tongue from superior to inferior?

A

superior longitudinal
vertical alternating with transverse
inferior longitudinal

27
Q

what is the function of the intrinsic muscles of the tongue?

A

change shape of tongue (phonation and moving food)

28
Q

layers of teeth from outside to inside

A 
ameloblasts
enamel
dentin
predentin
odontoblast
dental papilla
29
Q

what is the function of ameloblasts?

A

produce enamel

30
Q

what is the hardest substance in the body?

A

enamel

31
Q

what is enamel made of?

A

interlinked enamel rods

32
Q

what type of cells are ameloblasts?

A

polarized columnar

33
Q

what is the thickness of enamel?

A

2 mm thick

34
Q

what can’t we make more of after a tooth eruption?

A

enamel

35
Q

what is the precursor to dentin before mineralization?

A

predentin

36
Q

which cells are produced by odontoblasts?

A

dentin

37
Q

what are the columnar cells lining the pulp cavity?

A

odontoblasts

38
Q

unlike ameloblasts, ondontoblasts survive in?

A

adults

39
Q

what is the function of odontoblasts?

A

repair and produce dentin

40
Q

what is dental papilla made of?

A

CT with many blood vessels and nerves

41
Q

which cells produce dentin?

A

odontoblasts

42
Q

which cells produce enamel?

A

ameloblasts

43
Q

which teeth cells will persist in adults?

A

odontoblasts

44
Q

enamel is produced by which type of cell?

A

ameloblasts

45
Q

named the area of CT beneath the odontoblasts?

A

dental pulp

46
Q

which cell type will maintain dentin?

A

ondontoblasts

organ histology final (9 decks)

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