GI I Flashcards
Anterior masticatory submucosa
adipose CT elements present
posterior masticatory submucosa
minor salivary glands present
Burton’s line is a symptom of what
lead poisoning
What are the 3 strata of the lining mucosa
stratum basal
stratum spinosum
stratum superficiale
Filiform papillae
covers most of the tongue
no taste buds
fungiform papillae
contain taste buds
mushroom shaped
extenstions of lamina propria
circumvallate papillae
largest
proximal to sulcus terminalis
deep moat along lateral margin on either side
foliate papillae
not well developed in humans
found on lateral margin of tongue
have a moat
Which CNs do taste buds have synaptic contact
VII, IX, or X
parotid gland contains only _____ cells
serous
What are the 3 major salivary glands
parotid
submandibular
sublingual
Submandibular gland contains primarily _____ cells with some ______ cells
serous
mucous
Serous demilunes are present where
submandibular gland
sublingual gland
Sublingual gland
mucous cells predominate
amylase
breaks down carbohydrates
lipase
breaks down lipids
_____ and ____ are both digestive enzymes
amylase
lipase
lysozyme
antibacterial
lactoperoxidase
antibacterial
lactoferrin
binds iron
antibacterial in nature
enamel
appears white
dentin
deep to enamel
appears yellow
cementum
outer coating of root
clinical crown
portion of tooth exposed above gum line
What does the center of the tooth contain?
vessels
nerve fibers
ct
mature enamel is 96-98% ________
calium hydroxyapatite
injured enamel can lead to what
cavity
What are the important molecular signals of the bud stage
FGF-4
BMPs 2,4, 6
stages of tooth development
Bud stage Cap stage Bell stage Appositional dentin and enamel stage tooth eruption functional tooth
bud stage
prominent invagination
cap stage
oral epithelium and base undergoes differentiation
bell stage
forms bell shaped components
Ameloblasts are initially found in the ______ stage
secretory
maturation -stage ameloblasts
stratum intermedium is absent, instead a papillary layer is present
cementoblasts
become cementocyttes when surrounded by cementum
acellular cementum
upper root area
cellular cemetum
lower root
thicker
odontoblasts
functino is for synthesis and elaboration of dentin
derived from neural crest cells
Predentin
initial elaboration of dentin
need to be further mineralized
mineralized dentin
mature dentin
have a yellowish componenet
Important proteins found in dentin
dentin phosphoprotein
dentil sialoprotein
Dentinal tubules
go through entire thickness of dentin
contain cellular processes extended from odontocytes
