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Histology Test 3 Brendan > Tooth, Tongue, Salivary Glands > Flashcards

Tooth, Tongue, Salivary Glands Flashcards

1
Q

Teeth are composed of internal soft tissue called _____ and 3 calcified tissues: _____ and ____ which make the surface layer and ____, which lies between the surface layer and internal soft tissue

A

pulp
enamel, cementum
dentin

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2
Q

Calcified dental tissues are made of _____ _____

A

calcium hydroxyapatite

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3
Q

Teeth have an enamel covered ____, a cementum covered _____, and a ____ (where the 2 surface materials meet).

A

crown
Root
cervix

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4
Q

Enamel consists of a highly calcified matrix of 2 fibrous high molecular weight glycoproteins called _____ and ____

A

enamelin

amelogen

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5
Q

____ is acellular after tooth eruption and cannot repair itself.

A

enamel

Note it is the hardest substance in the body

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6
Q

_____ makes up the bulk of the tooth and surrounds the central pulp chamber and root (pulp) Canal

A

dentin

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7
Q

Dentin has a calcified matrix containing _____ fibers and is manufactured by ______, which continuously produce dentin

A

collagen

odontoblasts

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8
Q

Odontoblasts are located at the periphery of the ____ and send cytoplasmic extensions (odontoblastic processes) into tunnel-like spaces called dentinal _____ within dentin

A

pulp

tubules

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9
Q

The cementum is a collagen containing calcifed matrix produced by _____

A

cementoblasts

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10
Q

_____ are in the apical region of the cementum and are located within lacunae. They send processes within canaliculi towards the peridontal ligament.

A

Cementocytes

the coronal region of the cementum has no cementocytes

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11
Q

_____ continuously produce cementum after tooth eruption to compensate for decrease in tooth length that results from enamel abrasion

A

cementoblasts

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12
Q

Dental ____ is a gelatinous connective tissue with odontoblasts in its peripheral layer (closest to dentin). It also contains mesenchymal cells and thin collagen fibers.

A

Pulp

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13
Q

Dental ____ is richly vascularized and innervated by sympathetic fibers. All sensations from this structure are interpreted as ____ in the CNS

A

pulp

pain

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14
Q

The _____ ligament is the dental supporting structure and consists of ____ irregular connective tissue located between the root cementum and bony alveolus.

A

peridontal

dense

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15
Q

Collagen fibers in the peridontal ligament are arranged in ____ ____ bundles that extend from the cementum to bone and suspends the tooth in its ___

A

principal fiber

alveolus

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16
Q

Gingivae is covered by stratified squamous partially keratinized (called _______) to keratinized epethlium.

A

parakeratinized

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17
Q

_____ has dense irregular CT that is arranged in 5 principal fiber bundles. It attaches to enamel surface via hemidesmosomes.

A

Gingivae

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18
Q

The peridontal ligament attaches to the _____ _____ ______.

A

alveolar bone proper

19
Q

Alveolar bone consists of an inner layer (______ ______) and an outer layer (______ _____) of compact bone with an intervening layer of cancellous/trabecular bone called _____.

A

cribiform plate
cortical plate
spongiosa

20
Q

The tongue is divided into an anterior 2/3 and a posterior 1/3 by the _____ ____ which is a V shaped depression. The posteriorly pointing apex ends in a shallow pit called the ____ ____

A

sulcus terminalis

foramen cecum

21
Q

On the dorsal surface, the tongue is covered by ______ to keratinized stratified squamous epithelium. On the ventral surface it is covered by stratified squamous ______ epithelium. Both surfaces have a ____ _____ and _____ of dense irregular collagenous CT

A

parakeratinized
nonkeratinized
lamina propria
submucosa

22
Q

The muscular ____ forms the bulk of lingual tissue.

A

core

it has muscle tissue in 3 directions

23
Q

Lingual papillae are located on the ____ surface of the anterior 2/3 of the tongue.

A

dorsal

24
Q

____ papillae are short, narrow, highly keratinized pointed structures that project above the tongue surface

A

Filiform

25
Q

____ papillae are mushroom-shaped and project above the tongue surface. They are interspersed among the ____ papillae and occasionally have taste buds

A

fungiform

filiform

26
Q

____ papillae are shallow longitudinal furrows located on the tongue lateral aspect

A

foliate

27
Q

____ papillae are large and circular, with each one surrounded by a moat like furrow. There are 10-15 in number and are distributed in a V pattern, just anterior to the _____ _____

A

circumvallate

sulcus terminalis

28
Q

Taste buds sit in the furrow of ______ and _____ papillae

A

circumvallate, foliate

29
Q

___ ____ are intraepithelial sensory organs, each consisting of 60-80 spindle shaped cells

A

taste buds

30
Q

There are 4 different taste bud cell types. Type 1 is: ____. Type 2 is ____. Type 3 is _____. Type 4 is ____

A

dark
light
intermediate
basal

31
Q

What is the proposed life cycle/relationship of the cell types? Basal–>____–>____–>_____

A

dark
light
intermediate

32
Q

Salty and sour tastes are due to specific _____ ______ in cells

A

ion channels

33
Q

bitter and sweet are due to specific _____ _____

A

membrane receptors

34
Q

Receptors called ______ detect bitter substances

A

TAS2R

35
Q

_____ is our “savory” taste and detects the carboxylate ion on ______ _____.

A

umami

glutamic acid.

36
Q

Lingual salivary glands deliver ____ secretions into the furrow surrounding each papilla, assisting the taste buds in perceiving stimuli

A

serous

37
Q

Glands are von Ebner secrete into the groove by the _____ papillae. The serous fluid is filled with _____

A

circumvallate

lipases

38
Q

The three paired exocrine salivary glands are: _____, ____, and _____

A

parotid
submandibular
sublingual

39
Q

Parotid secretions are _____, submandibular glands are _____, while sublingual secretions are mainly ____

A

serous
serous and mucous
mucous

40
Q

What do glands secrete? 4 things:

A

lysozyme
amylase
lactoferrin
secretory component for IgA

41
Q

What type of glands are salivary glands?

A

compound tuboalveolar

42
Q

Salivary acini consist of serous and mucous cells arranged around a central lumen that connects to an ______ duct. This duct leads to a striated _____ duct. These ducts lead to a ____ duct.

A

intercalated
intralobular
interlobular

43
Q

Intercalated duct cells may secrete _____ and absorb ____ ions

A

bicarbonate

chloride

Histology Test 3 Brendan (9 decks)

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