Tooth, Tongue, Salivary Glands Flashcards Preview

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

Flashcards in Tooth, Tongue, Salivary Glands Deck (43):
1

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

pulp
enamel, cementum
dentin

2

Calcified dental tissues are made of _____ _____

calcium hydroxyapatite

3

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

crown
Root
cervix

4

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

enamelin
amelogen

5

____ is acellular after tooth eruption and cannot repair itself.

enamel
Note it is the hardest substance in the body

6

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

dentin

7

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

collagen
odontoblasts

8

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

pulp
tubules

9

The cementum is a collagen containing calcifed matrix produced by _____

cementoblasts

10

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

Cementocytes
the coronal region of the cementum has no cementocytes

11

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

cementoblasts

12

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

Pulp

13

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

pulp
pain

14

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

peridontal
dense

15

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

principal fiber
alveolus

16

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

parakeratinized

17

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

Gingivae

18

The peridontal ligament attaches to the _____ _____ ______.

alveolar bone proper

19

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

cribiform plate
cortical plate
spongiosa

20

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 ____ ____

sulcus terminalis
foramen cecum

21

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

parakeratinized
nonkeratinized
lamina propria
submucosa

22

The muscular ____ forms the bulk of lingual tissue.

core

it has muscle tissue in 3 directions

23

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

dorsal

24

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

Filiform

25

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

fungiform
filiform

26

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

foliate

27

____ 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 _____ _____

circumvallate
sulcus terminalis

28

Taste buds sit in the furrow of ______ and _____ papillae

circumvallate, foliate

29

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

taste buds

30

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

dark
light
intermediate
basal

31

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

dark
light
intermediate

32

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

ion channels

33

bitter and sweet are due to specific _____ _____

membrane receptors

34

Receptors called ______ detect bitter substances

TAS2R

35

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

umami
glutamic acid.

36

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

serous

37

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

circumvallate
lipases

38

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

parotid
submandibular
sublingual

39

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

serous
serous and mucous
mucous

40

What do glands secrete? 4 things:

lysozyme
amylase
lactoferrin
secretory component for IgA

41

What type of glands are salivary glands?

compound tuboalveolar

42

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.

intercalated
intralobular
interlobular

43

Intercalated duct cells may secrete _____ and absorb ____ ions

bicarbonate
chloride