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NBDHE > Histology > Flashcards

Histology Flashcards

1
Q

What period is the 1st week of conception

A

preimplantation

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2
Q

What period is week 2-8

A

embryonic

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3
Q

What period is week 9- birth

A

fetal

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4
Q

What is the term for when a zygote is formed through the union of ovum and sperm?

A

fertilization

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5
Q

what will become the embryo?

A

embryoblast layer

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6
Q

What is the nutritive layer for the embryo?

A

trophoblast layer

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7
Q

Where does the bilaminar disk appear?

A

Within the blastocyst

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8
Q

What does the bilaminar disk consist of?

A

The epiblast and hypoblast

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9
Q

What does the trilaminar disk consist of?

A

ectoderm, mesoderm, and endoderm

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10
Q

what does the ectoderm form?

A

enamel organ (enamel)

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11
Q

what does the mesoderm form?

A

dental papilla (differentiates into pulp and dentin)
dental sac (cementum)

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12
Q

what does the endoderm form?

A

epithelial linings for respiratory and digestive tracts

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13
Q

which period do most abnormalities form?

A

embryonic period

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14
Q

what weeks do the face and oral cavity develop

A

3-12

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15
Q

the maxilla and mandible are formed from what brachial arch?

A

1st

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16
Q

what is the upper face derived from?

A

frontonasal process

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17
Q

what is included in the upper face

A

forehead, bridge of nose, primary palate, nasal septum, nasal pits, etc

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18
Q

What is the middle face derived from?

A

maxillary process

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19
Q

what does the middle face include?

A

nose, center portion of upper lip, zygomatic bones, temporal bones, cheeks, and philtrum

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20
Q

lower face is derived from what?

A

mandibular process

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21
Q

what do nasal placodes grow into

A

nasal pits

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22
Q

what is the stomodeum?

A

the mouth

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23
Q

what weeks do the tongue form

A

4-8

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24
Q
A
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25
Q

lingual swellings and the tuberculum impar form what part of the tongue

A

anterior 2/3

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26
Q

copula forms what part of the tongue

A

base/back

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27
Q

what is the area called at the back of the tongue where the body and base of the tongue fuse together?

A

sulcus terminalis

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28
Q

what weeks does the hard palate form?

A

5-12

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29
Q

primary palate composes what part?

A

anterior 1/3 of hard palate

30
Q

the secondary palate is formed by what

A

two palatal shelves

30
Q

what does the secondary palate compose

A

posterior 2/3 hard palate

31
Q

what are the stages of tooth development?

A

initiation, bud, cap, bell, apposition, and maturation
(I drank Bud light and ate CAmPBELL soup at the APPle store party at Midnight)

32
Q

initiation stage. what happens

A

dental lamina forms

33
Q

bud stage

A

tooth germ forms

34
Q

cap stage

A

enamel organ, dental papilla, and dental sac form

35
Q

bell stage

A

LOTSss happening. cytodifferentiation, dentin and enamel start to form

36
Q

apposition stage

A

enamel, dentin, and cementum are secreted (dentinogenisis and ameleogensis)

37
Q

maturation stage

A

dental tissues develop into their mature tissues and undergo calcification

38
Q

cleft lip. what fails to fuse

A

medial nasal process with maxillary process

39
Q

cleft palate what fails

A

palatal shelves do fue together or with primary palate

40
Q

enamel is a product from what

41
Q

layers of enamel

A

outer enamel, inner enamel, stratum intermedium, and stellate reticulum

42
Q

bulk of the enamel organ and has star shaped cells is what layer of enamel

A

stellate reticulum

43
Q

what does the inner enamel develop

A

ameleoblasts

44
Q

basic unit of enamel is what

A

enamel rod

45
Q

lines in enamel include

A

hunter bands, lines of retzius, neonatal line, perkaymata, spindles, tufts, and lamellae

46
Q

neonatal line marks what

47
Q

horizontal lines visible on tooth surface

A

perikymata

48
Q

what forms dentin

A

dental papilla

49
Q

dentin forms the ___ of the tooth

50
Q

lines in dentin

A

von ebner, owen, tomes granular layer

50
Q

1st layer of dentin

51
Q

calcified dentin associated with chronic injury

51
Q

dentin formed in response to trauma

52
Q

dentin formed around odontoblastic process

A

peritubular

53
Q

dentin around pulpal wall

A

circumpolar

54
Q

the root derives from what

A

enamel organ

55
Q

what determines the shape of roots

56
Q

the center of ____ becomes the pulp

A

dental papilla

57
Q

most common cells in the pulp

A

fibroblasts

58
Q

what forms cementum

A

dental sac

59
Q

line formed with remodeling teeth through ortho

A

reversal line

60
Q

pdl is formed by

A

dental sac

61
Q

bone is formed by

A

dental sac

62
Q

pdl fibers embedded in bone and cementum

A

sharpeys fibers

63
Q

compact dense bone

64
Q

porous spongey bone

A

cancellous

65
Q

U shaped socket

66
Q

inward projections of CT

67
Q

non keratinized mucosa

68
Q

keratinized mucosa

A

masticatory

69
Q

most numerous papilla

NBDHE (11 decks)

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