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Histology Lecture Test 3 > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

what is the oral cavity bound by superiorly?

A

hard and soft palate

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2
Q

what is the oral cavity bound by inferiorly?

A

tongue and floor of the mouth

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3
Q

what is the oral cavity bound by anterior and lateral?

A

teeth (dental arcade)

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4
Q

what is the oral cavity bound by posteriorly?

A

orophaynx

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5
Q

Vestibule

A

area enclosed betweeen the lips and teeth (or check)

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6
Q

vermillion border

A

transitional zone between external haired skin and the interal oral mucosa

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7
Q

Where does the vermillion border get its color?

A

the highly vascular dermis covered by a thin layer of epidermis

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8
Q

What do lips lack?

A

sweat and sebaceous glands

dry out easily

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9
Q

mastiaction involves

A

cutting, chewing, and grinding food by oral surfaces

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10
Q

swallowing is also known as

A

deglutition

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11
Q

Oral cavity is involved in

A
  • speach
  • facial expression
  • sensory perception
  • respiration
  • mastication
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12
Q
A
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13
Q

what is the posterior 1/3 of the tongue?

A

lingual tonsils

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14
Q

what is the anterior 2/3 of the tongue?

A

skeletal muscle

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15
Q

What are the orientation of the skeletal tongue muscles?

A

longitudinal
transverse
oblique

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16
Q

what is the line that divides the tongue?

anteriorly and posteriorly

A

sulcus terminalias

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17
Q

What is the dorsal surface of the tongue covered with?

A

nonkeratinized
stratified squamous
epithelium

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18
Q

lamina propria of the tongue is associated with

A

the
muscle core of the
tongue

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19
Q

Where is Lining Mucosa found?

A
  • inner cheeks
  • floor of mouth
  • ventral suface of tongue
  • soft palate
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20
Q

What does lining mucosa lack?

A

stratum corneum

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21
Q

Where may Masticatory Mucosa be located?

A

gums and hard palate

areas of high abrasion

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22
Q

Masticatory Mucosa may be

A

keratinized or parakeratinized

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23
Q

CELL OF THE STRATUM CORNEUM of Masticatory Mucosa

A

DO NOT LOSE NUCLEI

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24
Q

What are the four kinds of Lingual Papilae

  • bumps

* on dorsal surface

A
  • filiform
  • fungiform
  • foliate
  • circumvalate

according to the shape

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25
Q

What are the Lingual Papilae formed by

A
  • highly vascular connective tissue core
  • covering of stratifeied epithelum
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26
Q

What are the most numerous Lingual Papilae?

A

Filiform Papillae

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27
Q

Filiform Papillae

A
  • keratinized short bristles
  • distributed in parallel row
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28
Q

Filiform Papillae lack

A

taste buds

primarily tactile

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29
Q

Fungiform

A
  • nonkeratinized stratified squamous
  • Taste buds along apical surface.
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30
Q

Do fungiform have taste buds?

A

yes

on apical surface

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31
Q

Foliate papillae

A
  • parallel rows
  • taste buds in lateral wall
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32
Q

Do foliate papillae have taste buds?

A

yes

in lateral wall

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33
Q

Where are Cirumvallate Papillae found?

A

in the posterior part
of the tongue, aligned in front of the sulcus terminalis.

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34
Q

Cirumvallate Papillae are surrounded by a

wall like

A

circular furrow or trench

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35
Q

Do Cirumvallate Papillae have taste buds?

A

yes

in the walls

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36
Q

Serous Glands

Ebner’s glands

A
  • in the connective tissue
  • in contact with the underlying muscle
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37
Q

Serous Glands are associated with

A

foliate & circumvallate papilla

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38
Q

What do serous glands secrete?

ebners gland

A
  • lingual lipase
  • VEGP
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39
Q

Where do serous glands empty?

A
  • into the open floor of circular furrows
  • into moat
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40
Q

VEGP name

A

Von Ebner’s gland protein

Ebnerin

41
Q

VEGP function

Ebnerin

A
  • undertakes the selective binding of sapid (flavorful) chemicals and their transport to taste receptors
  • concetrate and transport
42
Q

How many cells do taste buds have?

A

50- 150

43
Q

A taste buds narrow _____ end extends into the taste pore

A

apical

44
Q

What are the 3 components of a taste bud?

A
  1. taste recpetor cells
  2. supporting cells (or immature cells
  3. precursor cells (or basal cell)
45
Q

What are the precursor cell compent of taste bud?

A

basal cells

can make immature and receptor cells

46
Q

Taste buds are ________ receptors

A

chemo

47
Q

Taste buds are found in what paillae?

A
  • fungiform
  • circumvallate
  • foliate
48
Q

Besides the papillae where else can you find taste buds?

A
  • soft palate,
  • posterior pharynx
  • epiglottis
49
Q

What is the shape of a taste bud cell?

A

ovoid

50
Q

What is the life span of a tastse bud?

A

10 to 14 days

51
Q

What portion of the taste receptor comes in contact with an afferent nerve terminal?

A

basal porton

52
Q

What are the 5 tastes

A
  • sweet
  • sour
  • bitter
  • salty
  • umami
53
Q

What does umami taste?

A

monosodium glutamate

savorior

54
Q

Where are bitter taste receptors located

A

in the lingual tonsil area at the back of the tongue

55
Q

What are examples of bitter taste?

A
  • Morphine
  • caffeine
  • nicotine
56
Q

Dr. Cole says

A

Kohlrabi tastes VERY bitter

due to a gene

can’t eat a grapefruit “its painful”

57
Q

Kohlrabi contans

A

glucosinolates

58
Q

Kohlrabi inhibits

A

iodine uptake by the thyroid

59
Q

Umami is a speacialized receptor for

A

L-Glutamate and other amino acids

60
Q

What is glutamate found in?

A

meat, cheese, and several vegtables

61
Q

MSG

monosoduim glutamate

A
  • added to foods to enhance flavor
  • added to elderly to promote food consumption
62
Q

A single taste bud can taste

A

all the flavors but concentrate on 2 or the 5

63
Q

Taste bud on the palate register?

A

primarily bitter and sour

64
Q

The posterior pharynx and epiglottis register

A

all five flavors

65
Q

CD 36

A
  • taste reponse to fat
  • can cause them to increase fat enyzme in GI
66
Q

sympathetic stimulation of Saliva

A

INHIBITS aqueous secretion

is thick viscous rich in protein (ex. mucus)

67
Q

Parasympathetic stimulation of Saliva

A

stimulates

is watery

68
Q

Saliva contains

A

gylcoproteins
water
protiens

69
Q

Amylase

A

converts strach to sugar

found in saliva

70
Q

Lysozyme

A

anitbacterial compound

found in saliva

71
Q

Saliva has _______ K and ______ Na

A

high, low

72
Q

Bicarbonate in saliva

A

acts as a buffer

there is a high amount of it

73
Q

Saliva produces/secretes

A

sailvary IgA

74
Q

What is the average amount of salvia a human produces per day?

A

600- 1500mL

75
Q

What are the functions of saliva?

A
  • Moistens oral mucosa & dry food
  • Provides carrier medium for sense of taste
  • Control of bacterial flora

+ Iga, Amylase, & Bicarbonate

76
Q

pellicle funciton

A

a semipermeable network of
adsorbed salivary macromolecules and provides partial protection against acidic challenges

cannot completely prevent demineralization of the tooth surface

77
Q

Pellicle contains

A

Antibodies

78
Q

What are the 3 main salivary glands?

A
  • parotid
  • submadibular
  • sublingual
79
Q

What is the largest salivary gland?

A

pariod

80
Q

Parotid Gland

A

ONLY serous

in cheek

81
Q

Stenson’s Duct

A

opens within vestibule, opposite upper
2nd molar

Parotid Duct

82
Q

Submandibular

A

mixed

83
Q

where are submandiblar glands located?

A

loacted inferior and medial to the ramus of the mandible

84
Q

Wharton’s Duct

A

opens at sublingual caruncle

Subandibular Duct

85
Q

Sublingual

A

mostly mucous

located below tongue

86
Q

What are the other smaller accessory glands?

A

lingual, labial, buccal, molar &
palatine glands

87
Q

Acinus

A

secretory unit

can be serous or mucous

88
Q

What cells surround the acini?

A

Myoepithelial

89
Q

Myoepithelial Cells

A

contraction

aids in secretion of saliva

90
Q

Serous acini of mixed glands are often in the form of

A

demilunes

91
Q

Intercalated ducts secrete

A

HCO3

92
Q

Intercalated ducts are lined by

A

simple

93
Q

Intercalated ducts are

A

cuboidal epithelium

94
Q

Intercalated ducts resorb

A

Cl

95
Q

Striated ducts resorb

A

Na

96
Q

Striated ducts secrete

A

lysozyme, K, & Ig

97
Q

What do straited ducts empty into?

A

excretory ducts

98
Q

Sialolith

A

stone in duct

Parotid and Submandibular

Histology Lecture Test 3 (10 decks)

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