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cell test 4 > cell bio test 4 GI I BS > Flashcards

cell bio test 4 GI I BS Flashcards

1
Q

where is the masticatory mucosa

A

gingivae and hard palate

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2
Q

What does the masticatory mucosa lack

A

submucosa on gums and palatine raphe

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3
Q

what is burton’s line?

A

blue-gray gingival margin because of lead poisoning

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4
Q

what is lining mucosa?

A

nonkeratinized stratifies squamous–most of the oral cavity is this type

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5
Q

three layers of the lining mucosa?

A

stratum basale, spinosum and superficiale

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6
Q

What mucosa is associated with tase?

A

specialized mucosa

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7
Q

4 types of papillae

A

filiform, fungiform, circumvallate, foliate

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8
Q

filiform papillae

A

keratinized stratified squamous epithelium–no taste buds

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9
Q

fungiform papillae

A

mushroom shaped, abundant at tip of tongue

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10
Q

circumvallate papillae

A

8 to 12 large papillae in front of sulcus terminales, surrounded by lingual salivary glands (von Ebner’s glands) that secrete into “moat” surrounding the papillae

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11
Q

foliate papillaea

A

lateral sides of tongue, stratified squamous, taste buds, small serous glands empty into clefts

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12
Q

3 types of taste bud cells

A

neuroepithelial (synapse with CN VII, IX and X), supporting cells (turnover in 10 days), basal cells (stem cells)

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13
Q

three regions of lip

A

skin, vermilion zone, mucosa

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14
Q

skin of lip

A

stratified squamous keratinized with hair and sweat glands

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15
Q

vermilion zone

A

thin skin that allows red of blood to show–no sweat or hair

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16
Q

mucosa of lip

A

stratified squamous nonkeratinized epithelium with lamina propria–submucosa deep to mucosa contains labial salivary glands

17
Q

major salivary glands and their secretions

A

parotid (serous), submandibular gland (serous and mucous-mucous predominant), sublingual gland ( mixed with mucous predominant)

18
Q

What is in saliva?

A

protein (protective pellicle on teeth), enzymes (amylase, lipase, lysozyme, lactoperoxidase), ions, mucins, IgA, Lactoferrin

19
Q

crown of tooth composed of?

A

enamel, dentin

20
Q

root of tooth composed of?

A

cementum, dentin

21
Q

anatomic crown v. clinical crown?

A

clinical is what is exposed above the gumline

22
Q

what makes up most of enamel?

A

calcium hydroxyapatite-hardest substance in body

23
Q

where is enamel derived from/

A

epithelial tissue–not replaced once formed

24
Q

what are the protein components of enamel?

A

enamelins and tuftelins

25
Q

what can cause damage to enamel?

A

carious lesions, bulimia

26
Q

stages of tooth development

A

bud, cap, bell, appositional dentin and enamel, tooth eruption, and functional tooth

27
Q

bud stage

A

invagination of oral epithelium into mesenchyme, mesenchymal cells form primordium of dental papilla

28
Q

cap stage

A

inner enamel epithelium–ameloblasts, neural crest cells of neuroectoderm differentiate into odontoblasts

29
Q

bell stage

A

cells of stratum intermedium transport substances to ameloblasts

30
Q

amelogenesis

A

enamel formation–matrix production by secretory ameloblasts (Tome’s process is apical end of ameloblast). Matrix maturation is carried out by maturation-stage ameloblasts.

31
Q

cementum

A

cementoblasts (from mesenchyme) secrete it. Cemetocytes and processes are found in lacunae and canaliculi along root. Cementum is avascular. Sharpey’s fibers are periodontal ligament

32
Q

Dentin

A

similar to bone but has dentin phosphoprotein and dentin sialoprotein. Secreted by odontoblasts (derived from neural crest cells of mesenchyme). Dentinal tubules are formed by odontoblasts embedded in dentin (exposure increases tooth sensitivity. Dentin is secreted throughout life

33
Q

dental pulp and pulp cavity

A

has vessels and nerves. cavity becomes smaller as dentin is added inside tooth

cell test 4 (3 decks)

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