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Dental assisting > embryology and histology > Flashcards

embryology and histology Flashcards

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1
Q

study of prental developement

A

embryology

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2
Q

study of the structure and function of tissues

A

histology

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3
Q

begings at the start of pregnancy and continues to birth

A

parental development

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4
Q

union of male sperm and the ovum of the female

A

conception

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5
Q

succedanous

A

permanent teeth with primary predecessors

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6
Q

periodontium

A

tissues that support the teeth in the alveolar bone

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7
Q

ameloblasts

A

enamal forming cells

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8
Q

odontoblasts

A

dentin forming cells

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9
Q

cementoblasts

A

cementum forming cells

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10
Q

cementoclasts

A

cells that reabsorb cementum

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11
Q

osteoclasts

A

cells that reabsorb bone

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12
Q

the normal process of shedding primary is

A

exfoliation

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13
Q

stratified squamous epithelium

A

made up of oral mucosa

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14
Q

masticatory mucosa

A

oral mucosa that covers the hard palate, dorsum of the tongue and gingiva

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15
Q

preimplantation period

A

first period of prenatal development

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16
Q

what prenatal development is the most critical

A

embryonic period

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17
Q

embryonic layer that differentiates into cartilage , bones and muscles is

A

mesoderm

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18
Q

clinical crown

A

portion of the tooth that is visible in the mouth

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19
Q

deposition

A

process of adding a new bone

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20
Q

resorption

A

process of eliminating existing bone

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21
Q

largest mineral component in enamel

A

calcium

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22
Q

endoderm

A

inner layer

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23
Q

what layer is ectoderm

A

outer layer

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24
Q

mesoderm

A

middle layer

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25
forms bones, muscles and nerves of the face. lower lip, facial development between 4th - 8th week
first branchial arch
26
what branch forms the styloid process, muscle of facial expression, part of the hyoid bone, side and front of the neck
second branchial arch (hyoid arch)
27
what arch forms body of the hyoid and posterior of tongue
third branchial arch
28
forms structure of the lower throat, thyroid cartilage, muscle, and nerves of the pharynx and larynx
fourth, fifth, sixth branchial arch
29
primary palate
the shelf that separates the oral and nasal cavities
30
secondary palate
the final palate formed during embryonic development will extend to form soft palate
31
teratogens
environmental influences eg; chemicals,drug, radiation
32
odontogenesis
process of tooth formation
33
bud stage is also known as
initiation
34
cap stage is also known as
proliferation
35
bell stage is known as
histodifferentiation & morphodifferentiation
36
dental lamina
thickened band of oral epithelium
37
ameloblasts
enamel forming cells
38
odontoblasts
dentin forming cells
39
cementoblasts
cells that form cementum
40
fissure
grooves on biting surfaces
41
pit
enamel defect, small pinpoint hole
42
eruption
movement of the tooth into its functional position in the oral cavity
43
primate spaces
spaces between primary teeth
44
where is the enamel LOCATED
enamel organ
45
where is dentin located
dental papilla
46
where is the Cementum LOCATED
dental sac
47
what layer is enamel from
ectoderm layer
48
what layer is dentin from
mesoderm
49
what layer is cementum from
mesoderm
50
what is the hardest material in the body
enamel
51
whats formed from branchial arch
mandibular arch, anterior alveolar process, muscle of mastication
52
hunter schreger bands
dark and light bands in the enamel
53
primary dentin
formed before eruption of the tooth
54
secondary dentin
forms after the eruption of the tooth
55
tertiary dentin
formed in response to irritation
56
extension of bone from mandible and maxilla. Supports teeth in a functional position. Osteoblasts form this bone
alveolar process
57
the dense outer covering of the spongey bone. The central part of the alveolar process. Provides muscle attachment
cortical plate
58
the highest point of the alveolar ridge. Fused with cortical plates on facial and lingual sides
alveolar crest
59
interdental septum
between two teeth
60
interradicular septum
roots and one tooth
61
periodontal fiber group
supports the tooth in the socket
62
transseptal fiber group
supports between teeth
63
what is gingival fiber group
supports gingiva that surrounds tooth
64
apical fibers
prevents tipping, protects blood, lymph and nerve supplies. found around apex
65
extend from cervical cementum into gingiva
dentogingival fibers
66
dentin tubules
how u feel the sensation
67
extend from alveolar crest into gingiva
alveolar fibers
68
lining mucosa
cover inside of cheeks, lips, soft palate
69
masticatory mucosa
covers attached gingiva, hard palate dorsum of tongue
70
speciallized mucosa
dorsal of tongue, sensations of taste
71
sulcus
space between the tooth and gum
72
epithelial attachment (junctional epithelium)
tissue at the base of the sulcus where the gingiva attaches to the tooth
73
Fordyce's spots
small, yellowish elevations that may be on buccal mucosa
74
linea alba
a white ridge of raised tissue extending horizontally at where the max and mand teeth come together
75
ragae
horizontal lines on hard palate
76
labial commissure
angles of the mouth
77
vermillion border
red part of your lip (edges)
78
philtrum
space between nose and lips
79
osteoclasts vs osteoblasts
clasts resorb bone , blasts form bone
80
horizontal fibers
prevents lateral movements
81
oblique fibers
upward direction, resist forces on long axis
82
interradicular fiber
found in multi-rooted teeth , enchancea tipping and twisting resistance
83
vestibule
space between the teeth and inner mucosal lining of the lips and cheeks
84
oral cavity proper
space on the tongue side within the upper and lower dental arches

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