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OrganHisto Final > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

What are the functions of the digestive system?

A 
ingestion
mastication
secretion
absorption
elimination of wastes
motility
hormone release
chemical digestion
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2
Q

What is included in the oral cavity?

A 
teeth
major salivary glands
minor salivary glands
tonsils
lips
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3
Q

What is the oral cavity lined with?

A

oral mucosa

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4
Q

What are the three types of oral mucosa?

A

masticatory mucosa
lining mucosa
specialized mucosa

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5
Q

where is masticatory mucosa found?

A

gingiva and hard palate

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6
Q

What is the surface epithelium of the masticatory mucosa made of?

A

keratinized or parakeratinized stratified squamous

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7
Q

What is so special about parakeratinized stratified squamous?

A

they keep their nuclei

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8
Q

What is the lamina propria of the masticatory mucosa made of?

A

a papillary layer and reticular layer

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9
Q

What is the papillary layer of the lamina propria of masticatory mucosa made of?

A

thick loose CT that also has blood vessels, nerves, sensory receptors and some Meissner’s corpuscles

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10
Q

What is the reticular layer of the lamina propria of the masticatory mucosa made of?

A

more dense CT

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11
Q

Where is the lining muocsa found in the oral cavity?

A

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

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12
Q

What is the surface epithelium of the lining mucosa made of?

A

generally nonkeratinized stratified squamous (AKA stratified squamous)
sometimes parakeratinized stratified squamous
for the lips and vermillion border- keratinized stratified squamous (very thin layer)

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13
Q

What is the lamina propria of the lining mucosa of the oral cavity made of?

A

loose CT with blood vessels and nerves

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14
Q

What is the submucosa of the lining mucosa of the oral cavity made of? Where and what is found in there?

A

more dense CT
found in most places
can have minor salivary glands, sebaceous glands (mouth corners), larger blood vessels and nerves

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15
Q

Where is specialized mucosa of the oral cavity found?

A

dorsal surface of the tongue

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16
Q

What is the surface epithelium of the specialized mucosa of the oral cavity?

A

keratinized stratified squamous on filiform papillae

stratified squamous on all other papillae

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17
Q

What is the function of specialized mucosa of the oral cavity?

A

(filiform) move food

(all other taste buds) taste food

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18
Q

Describe the mucosa of the tongue.

A

thicker dorsally, thinner and smoother posteriorly

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19
Q

What is the surface epithelium of the tongue made of?

A

keratinized stratified squamous on filiform papillae

stratified squamous on all other papillae

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20
Q

What are the types of papillae found on the tongue?

A

filiform, fungiform, foliate, vallate (circumvallate)

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21
Q

What glands are associated with vallate papillae?

A

small salivary (von Ebner) glands

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22
Q

what is the function of the small salivary glands of the tongue?

A

to produce serous fluid to clease the taste buds on these papillae

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23
Q

What papillae do NOT have taste buds?

A

filiform

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24
Q

What is the lamina propria of the tongue made of?

A

loose CT; adipose possible

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25
Q

Describe the submucosa of the tongue.

A

usually considered present on the tongue; adipose possible

26
Q

What does the submucosa of the tongues contain?

A

lingual salivary glands

27
Q

What to the lingual salivary glands produce?

A

mucous and serous products

28
Q

What is special about the intrinsic tongue muscle?

A

there is no external attachment

29
Q

What are the 4 alternating muscles of the internal part of the tongue?

A

superior longitudinal
vertical muscles alternating with transverse
inferior longitudinal

30
Q

What is the function of the intrinsic tongue muscle?

A

change the shape of the tongue

31
Q

What are the 7 layers of the tooth starting from external going internal?

A 
stellate reticulum
ameloblasts
enamel
dentin
predentin
odontoblasts
dental papilla
32
Q

What makes up the stellate reticulum?

A

connective tissue

33
Q

When are ameloblasts seen?

A

immature teeth

34
Q

When do we lose ameloblasts?

A

after tooth eruption, this is why we only have what we have for enamel

35
Q

What makes up ameloblasts?

A

polarized columnar cells

36
Q

What is the function of ameloblasts?

A

to produce enamel

37
Q

What is enamel made of?

A

70% hydroxyapatite

38
Q

What does dentin contain?

A

dentinal tubules containing nerves and cell processes of odontoblasts

39
Q

What produces dentin?

A

odontoblasts

40
Q

What is predentin?

A

precursor to dentin before mineralization

41
Q

How long does predentin last?

A

about a day

42
Q

What produces predentin?

A

odontoblasts

43
Q

What are odontoblasts made of?

A

columnar cells lining the pulp cavity

44
Q

Do odontoblasts survive in adults?

A

Yes

45
Q

What is the function of odontoblasts?

A

repair and replace and produce dentin

maintain dentin

46
Q

What is the dental papilla made of?

A

CT with many blood vessels and nerves

47
Q

What is a potential problem of dental papilla?

A

extensive inflammation that hits dentin and enamel causes lots of pain

48
Q

What is the largest salivary gland?

A

parotid gland

49
Q

How much of the saliva output does the parotid gland produce?

A

30%

50
Q

Which salivary gland is most affected by mumps?

A

parotid gland

51
Q

What happens to the parotid gland as we age?

A

commonly becomes infiltrated with adipose

52
Q

What does the parotid gland produce?

A

100% serous fluid

53
Q

What products are produced in the parotid gland?

A

salivary amylase- breakdown of carbs
lysozyme- line of defense
IgA- line of defense

54
Q

How much of the salivary output does the submandibular gland produce?

A

60%

55
Q

What happens to the submandibular gland as we age?

A

it possibly becomes infiltrated with fat

56
Q

what does the submandibular gland produce?

A

mucus and serous (80-90%) products

57
Q

What does the submandibular gland have?

A

serous demilunes

58
Q

Which salivary gland is the smallest?

A

sublingual gland

59
Q

How much of the salivary output does the sublingual gland produce?

A

~5%

60
Q

What does the submandibular gland produce?

A

mucus (80%) and serous producs

61
Q

Where do all serous products come from in the submandibular gland?

A

demilunes; no separate serous acini

OrganHisto Final (6 decks)

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