last minute Flashcards
anti hbs antibody means
carrier
collapse of alveoli
atelectasis
two main regions of dermis
papillary layer -thin and less fibrous
reticular layer: thick and fibrous, continuous with hypodermis, more reticular fibers and fewer cells than papillary
subdermis is major site of
fat deposition primaryly areolar (loos )Ct
most sweat glands are
eccrine
primary function of cementum is to attach…
sharpeys fibers
cementum is _ than dentin
important in
1st layer of cementum deposited is. < This predominates at the _ of the root
softer
ortho
aceullar (deposited at DCJ)
coronal 2/3rd
(cementum/dentin) more closely resembles bone
thickest/thinnset at
cementum
thickest at tooth apex, thinnest at CEJ
formed in peripheral parts of mineralized dnetin inside walls of dentin tubules
peritubular
highly mineralied and little collagen
odontoblasts through predentin min. between tubules
dense collagen matrix
intertubular dnetin
outmost layer of primary dentin
first dentin formed, slightly less mineralied than other layers
mantle dentin
outlines pulp chamber and constitutes main part of dentin mass
more mineralized than
primary
secondary
each dentinal tubule contains
odontoblasts secrete organic components of dentin matrix—this mostly
cytoplasmic cell process (Tomes fiber) of an odontoblast
type I collagen
dead tracts may be caused by
caries, erosion, cavity prep, or odontoblastic crowding
accessory canals form when
hertwigs epithelial root sheath encounters blood vessel during root formation
root structure than forms around vessel
describe layer adjacent to odontoblast layer
cell free zone of weil
what passes from central pulp region across cel free zoen adn betwween odontoblasts, distal ends incorporated into matrix of the dentin layer
bundles of reticular (korff’s) fibers
plexus of raschkow
medial to cell rich zone. contains subodontoblastic plexus
predominant cell type of pulp
fibroblasts
plasma cells, lymphocytes, esodinphils, and other cell types common
enamel matrix secreted from each ameloblast from _
enamel matrix first formed in incisal/occlusal portion of the future crown near _
its tomes process-secretory surface of the ameloblast facing dentinoenamel junction (DEJ)
-the forming DEJ
in order for ameloblasts to form enamel, _ must be present
cells from the stratum intermedium
area at which calcification of tooth begins
DEJ
all cells found in the pulp
fibroblasts
odontoblasts
undifferentiated mesenchymal cells
lymphocytes, plasma cells, and eosinophils
pulp nerves, types (2)
autonomic and afferent sensory
sensory are myelinated
autonomics regulate blood flow in the capillary network
how does cementum differ from enamel
collagen,cementum has cellular components in the mature tissue
composed mostly of dentin and have dentinal tubules; may have an outer layer of predentin and often located adjacent to odontoblast cells
true pulp stones
concentric layer of calified material with no tubular structure
false pulp stones
aging and enamel permeability
perm reduced with aging
prochordal plate consists of
endoderm of roof of yolk sac and embryonic ectoderm
pyramids contain
upper motor neuron fibers only
large vein different from its artery
vein has…
more prominent tunica adventitia
submandibular ganglion associated with which nerve
lingual
mandibular division of V and chorda tympani of VII found in what fossa
infratemporal
which gland PURELY MUCUOUS
palatine
throcic duct which mediastinum
posterior
gnarled enamel most frequently found in …
cusps
parakeratinized oral mucosa often found where?
attached gingiva
gaba increases permeability to what ion
chloride
maximum urine concentration most closely related to
length of loop of henle
insulin increases activity of
PFK
most endogenous cholesterol in liver usually converted to
cholic acid
WHAT DO ELASTIN AND COLLAGEN have in common
1/3 glycine
non collagenous protein BEST chracterizes dentin matrix
PHOSPHOPHORYN
blocking hypothalamic hypophyseal venous portla system increases section of what?
PRL
commonly produces positive heterophile ab test
ebv?
hsv1?
cmv?
parainfluenza?
ebv
angioedema results from what
deficiency in C1 esterase inhibitor
enamel tufts are found in _
represent _
*anomalies of crystallization w no clin. importance
fan shaped, hypocalcified structures projecting from DEJ into enamel proper
inner 1/3 of enamel
rep areas of less mineralization
short dentinal tubules near the DEJ. odblasts that crossed BM before it mineralized into the DEJ
enamel spindles
partially calcified vertical defects in enamel resembling cracks or fractures that traverse entire length of crown from surface to the DEJ.
narrow/longer than
enamel lamellae
_>narrower than enamel tufts
optical phenomenon produced by changes in direction between adjacent groups of enamel rods.
seen most clearly in..
found in
hunter schreger bands
- most clearly in longitudinal ground sections
- found in inner 2/3
permanent teeth move _ and _ when erupting
occlusally and facially
bone lining the socket is referrerd as
bundle bone
cortical plate is surface layers of _ bone supported by _
lamellar bone
compact haversian systems of variable thickness
dentinogenesis-moves away from _ and toward _
DEJ and toward pulp
dentinal tubules are _ shaped
due to _.
Curvature of tubules _ in root dnetin
S shaped; overcrowding of odontoblasts
curve decreases in root dentin
when dead tracts become completely filled with calcified material
blind tracts
new erupted tooth–membrane covering derived from…
aka what?
- organic matrix that binds epithelium
oral epithelium
Nasmyth’s membrane
- primary enamel cuticle
uncomplicated healing of wound by secondary intention is most likely to show evidence of..
ulceration of epithelial surface
longest incubation period
- herpetic gingivostomatitis
- measles
- rabies
rabies
role of lactobacilli in coronal caries
causes progression of existing lesions
glioblastoma multiforme is the most common
astrocytoma
associated with increased risk of breast cancer
- fibroadenoma
- estrogen def.
- obesity
obesity
microscopic lesion for rheumatoid arthritis is called
pannus
upper compartment of the TMJ is that space between the …
disc and the articular fossa and eminence
teeth are in a straight line in what segment of the dentition
mandibular posterior
thickest section of the articular disc is the …
posterior border
primary molar with transverse ridge, oblique ridge, and DL groove
maxillary second
thickest section of the articular disc
posterior border
crown of mandibular 2nd molar inclines
mesially and distally
what of the following surface of permanent teeth is pit and fissure caries MOST likely to occur
lingual of maxillary 1st molars
from occlusal, outline of 2nd mandibular premolar is…
pentagonal
from facial view- CEJ MOST apical on crown of primary mandibular 1st molar on the
mesial 1/3rd
where do root canals usually join the pulp chamber..
apical to the CEJ
2nd pulp canal of mandibular 2nd PM mostly likely in what direction?
lingual
primary mandibular 1st molar has what…
distal groove
oblique ridge
distal triangular fossa
distal triangular fossa
show incremental nature of dentin apposition
run in right angle to dentinal tubule
incremental lines of von Ebner
all teeth develop from 4 lobes except
permanent 1st molar
mandibular 2nd premolar (3 cusp type)
distal fossa of the maxillary 1st opposes the
distal cusp of the mand 1st
distofacial groove of the Man 1 M opposes the …
oblique ridge of max M1
