Exam 2

Question 1

Oral cavity lining

Answer 1

stratified squamous epithelium (keratinized in herbivores)

Question 2

oral mucous membrane

Answer 2

moist membrane including the epithelium and associated CT below it

these are found in tubular organs lined with epithelium and glands

Question 3

lips

Answer 3

mucocutaneous junction
thick stratified squamous epithelium
core contains fibroelastic CT and skeletal muscle
propria/submucosa forms long papillae that extends into the thick epithelial layer

Question 4

palate

Answer 4

dorsal wall of oral cavity with hard and soft

Question 5

dental pad

Answer 5

in ruminants on the rostral part of the hard palate and replaces upper incisors
contains thick stratum corneum and numerous conical papillae caudally

Question 6

buccal wall

Answer 6

deep to facial muscles containing minor salivary glands and opening ducts of major salivary glands

Question 7

tongue

Answer 7

filled with skeletal muscle and a mucous membrane sac (intrinsic and extrinsic lingual muscles)
thicker epithelium on the dorsal rather than ventral side

Question 8

epithelial papillae of tongue

Answer 8

have either mechanical functions (keratinized) or gustatory (containing taste buds)

Question 9

Filiform

Answer 9

mechanical and the MOST NUMEROUS found on the dorsal surface of the rostral 2/3.
can be keratinized and pointed caudally
grasping food and grooming

Question 10

conical

Answer 10

mechanical, root of tongue and inner cheek surface. cone shaped and keeps food from slipping forward

Question 11

lenticular

Answer 11

mechanical, dorsal prominence of tongue in ruminant and are large and visible. they are lentil shaped and keratinized

Question 12

fungiform

Answer 12

gustatory mainly (maybe mechanical) scattered on rostral  area the distribution is species specific
(may be keratinized in herbivores)
Taste buds: dorsal carnivores and lateral herbivores

Question 13

circum vallate

Answer 13

gustatory, rostral border and has a moat.. taste buds are lateral and into the moat. in pairs pigs 1
23 carnivores
many in ruminants

Question 14

foliate

Answer 14

lateral margin of tongue, leaflike flaps

lots of taste buds on their lateral aspect

Question 15

gustatory glands (of Von Ebner)

Answer 15

serous secreting with ducts opening into the moats around the vallate or furrows between the foliate
the secretions are a medium that diffuse chemicals to taste buds. It washes the surface of the tastebud

Question 16

taste

Answer 16

aids survival indicating health and nutrients and warns of toxins

Question 17

tastbuds

Answer 17

on fungiform, vallate, and foliate as well as the epiglottis and soft pallate
oval clusters of columnar cells

Question 18

receptor (neuroepithelial) cells

Answer 18

have taste receptors on apical processes, basal synaptic

vesicles and apparent nerve contacts.

Question 19

presynaptic cells

Answer 19

have ion channels for salts or acids

Question 20

supportive (sustentacular) cells

Answer 20

apical microvilli and higher levels of L-type
Ca++ channels, needed for nerve impulse
generation.

Question 21

basal cells

Answer 21

divide and replace the columnar cells every few days

Question 22

taste pore aspects

Answer 22

receptor (neuroepithelial) cells, presynaptic cells, supportive (sustentacular) cells, basal cells
creates a physical interaction with the oral cavity

Question 23

taste sentations

Answer 23

metabotropic or ionotropic. can respond to multiple taste modalities.

Question 24

innervation of fungiform papillae

Answer 24

chorda tympani of CN VII

Question 25

innervation of vallate and foliate

Answer 25

CN IX

Question 26

LOOK AT TASTES

Answer 26

TASTES CHART

Question 27

Brachydont

Answer 27

teeth that have a definite growth pattern and limited period of eruption

Question 28

hypsodont

Answer 28

continuously erupting. some have a finite growth period and some do not

Question 29

deciduous

Answer 29

baby teeth (first to erupt) root gets resorbed by osteoclasts

Question 30

Permanent

Answer 30

last through adult life

Question 31

3 mineralized tissues

Answer 31

enamel, dentin, cementum

Question 32

enamel

Answer 32

ameloblasts and hardest part of the tooth

Question 33

dentin

Answer 33

odontoblasts and is harder than bone have collagen and hydroxyapatite. dentinal canaliculi and odontoblast processes

Question 34

cementum

Answer 34

cementoblasts and just like bones

Question 35

crown

Answer 35

exposed portion of the tooth, layers of enamel over dentin

Question 36

root

Answer 36

bony alveolus anchored | mineralized dentin covered by cementum

Question 37

pulp cavity

Answer 37

center of the teeth contains nerves and vasulature fibroblasts and collagen fibers

Question 38

periodontal ligament

Answer 38

perforating collagen fiber anchored in the bony alveolus and cementum of the root, it is the shock absorber

Question 39

salivary gland function

Answer 39

protection, lubrication, and provides fluid, pH adjustments, IgA and hormones, electrolyte balance, digestive enzymes

Question 40

minor salivary gland

Answer 40

submucosal CT, lingual (gustatory), buccal, labial, pharyngeal palatine

Question 41

major salivary gland

Answer 41

large (can dissect).

Question 42

parotid SG

Answer 42

serous secretion

Question 43

mixed serous and mucous secretion SG

Answer 43

mandibular, sublingual, zygomatic, molar

Question 44

structure of minor glands

Answer 44

smaller and less complex, lobed and less extensive duct work

Question 45

neck

Answer 45

Constriction of the tooth just below the gingival surface

Question 46

gingiva

Answer 46

gum anchored to the enamel, lasal lanima