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Histology Lecture Test 3 > Oral Cavity > Flashcards

Oral Cavity Flashcards

(98 cards)

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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
What are the Lingual Papilae formed by
* highly vascular connective tissue core * covering of stratifeied epithelum
26
What are the most numerous Lingual Papilae?
Filiform Papillae
27
Filiform Papillae
* keratinized short bristles * distributed in parallel row
28
Filiform Papillae lack
taste buds | primarily tactile
29
Fungiform
* nonkeratinized stratified squamous * Taste buds along apical surface.
30
Do fungiform have taste buds?
yes | on apical surface
31
Foliate papillae
* parallel rows * taste buds in lateral wall
32
Do foliate papillae have taste buds?
yes | in lateral wall
33
Where are Cirumvallate Papillae found?
in the posterior part of the tongue, aligned in front of the sulcus terminalis.
34
Cirumvallate Papillae are surrounded by a | wall like
circular furrow or trench
35
Do Cirumvallate Papillae have taste buds?
yes | in the walls
36
Serous Glands | Ebner's glands
* in the connective tissue * in contact with the underlying muscle
37
Serous Glands are associated with
foliate & circumvallate papilla
38
What do serous glands secrete? | ebners gland
* lingual lipase * VEGP
39
Where do serous glands empty?
* into the open floor of circular furrows * into moat
40
VEGP name
Von Ebner's gland protein | Ebnerin
41
VEGP function | Ebnerin
* undertakes the selective binding of sapid (flavorful) chemicals and their transport to taste receptors * concetrate and transport
42
How many cells do taste buds have?
50- 150
43
A taste buds narrow _____ end extends into the taste pore
apical
44
What are the 3 components of a taste bud?
1. taste recpetor cells 2. supporting cells (or immature cells 3. precursor cells (or basal cell)
45
What are the precursor cell compent of taste bud?
basal cells | can make immature and receptor cells
46
Taste buds are ________ receptors
chemo
47
Taste buds are found in what paillae?
* fungiform * circumvallate * foliate
48
Besides the papillae where else can you find taste buds?
* soft palate, * posterior pharynx * epiglottis
49
What is the shape of a taste bud cell?
ovoid
50
What is the life span of a tastse bud?
10 to 14 days
51
What portion of the taste receptor comes in contact with an afferent nerve terminal?
basal porton
52
What are the 5 tastes
* sweet * sour * bitter * salty * umami
53
What does umami taste?
monosodium glutamate | savorior
54
Where are bitter taste receptors located
in the lingual tonsil area at the back of the tongue
55
What are examples of bitter taste?
* Morphine * caffeine * nicotine
56
Dr. Cole says
Kohlrabi tastes VERY bitter due to a gene | can't eat a grapefruit "its painful"
57
Kohlrabi contans
glucosinolates
58
Kohlrabi inhibits
iodine uptake by the thyroid
59
Umami is a speacialized receptor for
L-Glutamate and other amino acids
60
What is glutamate found in?
meat, cheese, and several vegtables
61
MSG | monosoduim glutamate
* added to foods to enhance flavor * added to elderly to promote food consumption
62
A single taste bud can taste
all the flavors but concentrate on 2 or the 5
63
Taste bud on the palate register?
primarily bitter and sour
64
The posterior pharynx and epiglottis register
all five flavors
65
CD 36
* taste reponse to fat * can cause them to increase fat enyzme in GI
66
sympathetic stimulation of Saliva
INHIBITS aqueous secretion | is thick viscous rich in protein (ex. mucus)
67
Parasympathetic stimulation of Saliva
stimulates | is watery
68
Saliva contains
gylcoproteins water protiens
69
Amylase
converts strach to sugar | found in saliva
70
Lysozyme
anitbacterial compound | found in saliva
71
Saliva has _______ K and ______ Na
high, low
72
Bicarbonate in saliva
acts as a buffer | there is a high amount of it
73
Saliva produces/secretes
sailvary IgA
74
What is the average amount of salvia a human produces per day?
600- 1500mL
75
What are the functions of saliva?
* Moistens oral mucosa & dry food * Provides carrier medium for sense of taste * Control of bacterial flora | + Iga, Amylase, & Bicarbonate
76
pellicle funciton
a semipermeable network of adsorbed salivary macromolecules and provides partial protection against acidic challenges | cannot completely prevent demineralization of the tooth surface
77
Pellicle contains
Antibodies
78
What are the 3 main salivary glands?
* parotid * submadibular * sublingual
79
What is the largest salivary gland?
pariod
80
Parotid Gland
ONLY serous | in cheek
81
Stenson's Duct
opens within vestibule, opposite upper 2nd molar | Parotid Duct
82
Submandibular
mixed
83
where are submandiblar glands located?
loacted inferior and medial to the ramus of the mandible
84
Wharton's Duct
opens at sublingual caruncle | Subandibular Duct
85
Sublingual
mostly mucous | located below tongue
86
What are the other smaller accessory glands?
lingual, labial, buccal, molar & palatine glands
87
Acinus
secretory unit | can be serous or mucous
88
What cells surround the acini?
Myoepithelial
89
Myoepithelial Cells
contraction | aids in secretion of saliva
90
Serous acini of mixed glands are often in the form of
demilunes
91
Intercalated ducts secrete
HCO3
92
Intercalated ducts are lined by
simple
93
Intercalated ducts are
cuboidal epithelium
94
Intercalated ducts resorb
Cl
95
Striated ducts resorb
Na
96
Striated ducts secrete
lysozyme, K, & Ig
97
What do straited ducts empty into?
excretory ducts
98
Sialolith
stone in duct | Parotid and Submandibular

Histology Lecture Test 3 (10 decks)

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