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Anatomy exam 5 > oral cavity histo > Flashcards

oral cavity histo Flashcards

1
Q

what makes up epithelial membrane

A

epithelial tissue with an underlying connective tissue layer

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2
Q

types of epithelial membranes

A

cutaneous
mucous
serous

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3
Q

what type of membrane is found in the oral part

A

mucous membrane

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4
Q

what makes up the oral cavity

A

lips, vestible, oral cavity proper

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5
Q

priciple function of oral cavity

A

physical breakdown of food
mix of saliva with bolus of food
begin breakdown of carbs with enzymes

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6
Q

what are tonsils associated with

A

pharynx, root of tongue

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7
Q

where is orbicularis oris muscle

A

in the lips

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8
Q

where the muco-cutanenous junction occures

A

at the vermilion border

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9
Q

what is the vermilion border a product of:

A

closeness of the facial artery to the lips

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10
Q

opening to the mouth

A

oral fissure

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11
Q

oral cavity proper space

A

behind teeth

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12
Q

where is the vermilion border

A

at the apex of the lip

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13
Q

epithelial thickness in and out of lips

A

inner: thin
outer: thick

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14
Q

what gives the red line as we transition from skin to the lips

A

subcutaneous papilla

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15
Q

hair follicules are found on what part of lip

A

external, cutanous part

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16
Q

why vascularization can come so close to the surface of the lips

A

the subcutaneous papilla

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17
Q

epithelium of the oral mucosa (lining epithelium( and layers

A 
thick, stratified squamous epithelium
stratum basale
stratum spinosum
stratum superficiale
-like the tongue
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18
Q

sweat glands in the oral mucosa

A

no

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19
Q

what sensation element is found in the oral mucosa

A

meisners corpusles

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20
Q

oral cavity epithelium is found

A

covering soft palate, lips, cheeks, bottom of tongue, floor of mouth, part of lining mucosa

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21
Q

discription of parakeratinized epiethelium

A

has nucleous

but does not stain eosinophilic

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22
Q

where is parakeratinized epithelium(masticatory mucosa) found

A

hard palate
dorsum of tongue
gingiva

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23
Q

what makes up the tongue

A

muscle with a mucus membrane over it

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24
Q

what covers posterior of tongue

A

lingual tonsils

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25
Q

the first arch of the mouth

A

palatal glossal fold

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26
Q

what is behind the paatal glossal arch

A

palatine tonsil

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27
Q

types of papillae on tongue

A 
filiform papilla( all over)
Fungiform papilla(scattered on dorsum)
circumvallate papilla (v shape between anterior and post 1/3 of tongue
foliate papilae (youth only at side)
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28
Q

what papilla have taste buds

A

fungiform

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29
Q

devides anterior(2/3) and posterior(1/3) of tongue

A

sulcus terminalis (behind circumvallate papillae)

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30
Q

extrinic muscles of tongue roll

A

mount outside the tongue and move tongue in different directions

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31
Q

roll of intrinsic muscle of the tongue

A

change shape

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32
Q

the mid portion of the sulcus terminalis

A

foramen cecum(remnant of the thyroglossal duct)

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33
Q

smallest and most numerous papilae

A

filliform papilla

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34
Q

shape and make up of fillaform papilla

A

conicle with elongations at apex, covered with keratinized(lots) stratified squamous epithelium

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35
Q

roll of fillaform papilla

A

lick and move food (bent toward the pharynx

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36
Q

why fungiform papilla red

A

connective tissue comes really close to the surface(brings vasculature)

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37
Q

shape of fungiform

A

mushroom and round

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38
Q

what is found on the follate papilla

A

long ridges, with deep mucosal clefts, with numerous taste buds on the walls of the cleft

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39
Q

epithelium of follate papilla

A

nonkeratinzed stratified squamous epithelium

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40
Q

epithelium of fungiform papilla

A

lightly keratinized stratified squamous epithelium

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41
Q

shape and number of vallate papilla

A

dome shape (7-11)

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42
Q

taste buds location of vallate papilla

A

on the lateral walls

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43
Q

what empties into the “mote” of the vallate papilla

A

von ebner glands(lingual salivary glands)

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44
Q

roll of von ebner glands

A

release lots of saliva so taste buds can change rapidly with changing stimuli

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45
Q

epithelium of the vallate papilla

A

slightly keratinized stratified squamous epithelium

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46
Q

what type of receptor is taste bud

A

sensory receptor organ/chemorecetor

47
Q

what makes up a taste bud

A

neuroepithelial cell-sensory
supporting cells
basal cells

48
Q

neuroepthial cells of taste bud extends wear

A

through the epithelium

49
Q

at the surface/apex of the taste bud, what is found

A

taste pore with a taste hair

50
Q

what is the taste hair

A

a long microvillis that extends through the taste pore into the saliva where it is percieved

51
Q

what is found at the base of the taste bud

A

dendrites of the afferent

sensory neurons of CN VII (ant 2/3) and glossopharyngeal (post 1/3)

52
Q

location of nucleus for the taste bud

A

along the center-neuroepithelial and supporting

near base-basal

53
Q

nuclous of neuropiethlial cells

A

obvious and ciricular

54
Q

nucleous of supporting cels of taste bud

A

less circular

55
Q

roll of basal cells of taste buds

A

stems cells to give the neuroepithelial and supporting cells

56
Q

what is the enamel tissue

A

acellular, mineralized with no collogen.
made of 90% HA
interlocking rods extending from DEJ to surface of enamel

57
Q

what makes an enamel rod

A

an enamoblast cell (from ectoderm)

58
Q

makes up the bulk of the tooth

A

dentin

59
Q

what is dentin

A

70% HA with collogen

60
Q

what makes the dentin

A

odontoblasts

61
Q

where are odontoblast

A

along the pulp cavity

62
Q

what do odontoblasts secrete

A

predentin

63
Q

what are odontoblasts derived from

A

mesenchyme (neural crest cells)

64
Q

what is the pump cavity consist of

A

resembles mesenchyme
lined by odontoblasts
also fibroblasts with collogen plus ground substance
vessels and with nerve

65
Q

the primary bone of the maxilla or mandible

A

alveolar

66
Q

what makes up the periodontal ligaments

A

collogen bundles of approximately 150-350 microns thick connecting cementum to alveolar bone

67
Q

gingiva at the free margin epithelium

A

parakeratinized stratified squamish epithelium

68
Q

how much saliva is produced by major salivary glands

A

90%

69
Q

what inhibits saliva production

A

sympathetic

70
Q

location of minor salivary glands

A

in oral submucosa

71
Q

roll of saliva

A

protect and digest

72
Q

what enzyme in saliva breaks down carbs

A

amylase

73
Q

2 major cell types of salivary gland

A

serous

mucous

74
Q

physical description of serous cells

A 
polarized, pyramidal
basophilic cytoplasm (RER and Free ribosomes)
75
Q

what do serous cells secrete

A

secretory granules/zymogen (PR)

76
Q

physical description of mucous cells

A

cuboidal/columnar

nucleous at base of cell

77
Q

what do mucous cells produce

A

hydrophilic glycoprotein mucins

78
Q

the initial part of the duct system of the salivary glands

A

myoepithelial cells

79
Q

location of myoepithelial cels

A

within basal almina of secretory unit

80
Q

roll of myoepitheial cells

A

contract and accellerates secretion

prevents distention when lumen fills

81
Q

the functional unit of the salivary gland

A

salivon

82
Q

what makes up the salivon

A

acinus, intercalated duct, striated duct, excetory duct

83
Q

a blind sac of the salivary gland composed of secretory cells (secretory portion of salivon

A

acinus

84
Q

3 types of acinus in the salivon

A

serous acini
mucous acini
mixed acini

85
Q

cells of the serous acini

A

sereous cells only, generally spherical

86
Q

cells of mucous acini

A

mucous cells only, generaly tubular

87
Q

cells of mixed acini

A

serous and mucous

88
Q

the cap of serous cells in mixed acini due to traditional fixation methods, found in sublingual and submandibular glands

A

serous demilunes

89
Q

3 segments of salivary gland ducts

A

intercalated ducts
striated ducts
interlobar/excretory ducts

90
Q

intercalated ducts come from

A

acini

91
Q

cels of intercalated ducts

A

low cuboidal epithelials

92
Q

roll of intercalated ducts

A

modifies serous secretion

93
Q

striations of striated ducts come from

A

infoldings of basal plasma membrane

94
Q

cells of striated ducts

A

simple cuboidal to columnar epithelium

95
Q

roll of striated ducts

A

modifies serous secretion

96
Q

cells of interlobarl/excretory ducts

A

simple cuoidal/ pseudostratified columnar
stratified cuboidal to stratified squamous
becomes keratinized as it reaches oral epithelium

97
Q

largest salivary gland

A

parotid gland

98
Q

location of the parotid gland

A

extraoral

99
Q

where is the parotid papilla

A

at the end of the parotid duct at the 2nd molar

100
Q

what acinar are found in the parotid gland

A

branched acinar (serous)

101
Q

location of the submandibular gland

A

under the floor of the mouth extra orally

102
Q

where does the submandibular gland leave

A

via the submandibular duct through the frenulum

103
Q

what acinar arefound in the submandibular gland

A

branched tubuloacinar (mixed but mostly serous)

104
Q

smallest salivary gland

A

sublingual gland

105
Q

location of the sublingual gland

A

floor of mouth, intraorally

106
Q

duct of the sublingual gland

A

multiple with the sublingual fold

107
Q

acini of sublingual gland

A

branched tubuloacinar and mixed, but mostely mucous

108
Q

what are tonsils made of

A

lymphatic tissue

109
Q

types of tonsils

A 
palatine tonsils(oropharynx)
pharyngeal tonsils(nasopharynx)
Lingual tonsils (oropharynx)
110
Q

all 3 tonsils together in the pharynx form

A

waldeyer’s ring

111
Q

epithelium of the tonsils

A

stratified squamous epithelium that continues down into the crypts

112
Q

what is contained in the walls of the tonsil crypts

A

nodules

113
Q

what obscures the epithelium deep into the crypts

A

lymphocytes

Anatomy exam 5 (18 decks)

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