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809 - Exam 1 Block > Histo - Rougier > Flashcards

Histo - Rougier Flashcards

1
Q

above the notochord is related to the

A

brain

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2
Q

below the notochord is related to the

A

arches aka viscerocranium

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3
Q

the viscerocranium is derived from

A

NCCs (ectomesenchyme)

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4
Q

intramembranous means it never had

A

cartilage

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5
Q

endochondral bone means it had _______ that gave shape to ______

A

cartilage ; bone

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6
Q

had cartilage, it dies, gets replaced by bone

A

primary endocondral

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7
Q

cartilage that originates from intramembranous bone

A

secondary endochondral

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8
Q

cartilaginous neurocranium forms the

A

base of skull

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9
Q

membranous neurocranium forms the

A

roof of skull

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10
Q

arch 1 - distal Meckel’s cartilage gives rise to

A

malleus

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11
Q

arch 1 - dorsal Meckel’s cartilage gives rise to

A

incus

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12
Q

stapes is from arch

A

2

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13
Q

reichert’s cartilage in arch 2 gives rise to the

A

origin of hyoid

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14
Q

membranous viscerocranium (4 things)

A

maxilla
zygomatic
squama of temporal
mandible

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15
Q

origin and ossification of frontal bone

A

NCC and IM

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16
Q

origin and ossification of parietal bone

A

Mesodermal and IM

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17
Q

origin and ossification of occipital bone

A

mesoderm and endochondral

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18
Q

origin and ossification of petrous temporal bone

A

mesoderm and endocondral

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19
Q

origin and ossification of squamous temporal bone

A

NCC and endochondral

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20
Q

origin and ossification of hyoid bone

A

NCC and endochondral

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21
Q

the body of the mandible develops by what bone formation

A

intramembranous

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22
Q

is there an equivalent of meckel’s cartilage in the maxilla

A

no

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23
Q

articular cartilage develops from what cartilage

A

secondary

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24
Q

intramembranous bone formation forms most of the _________ , except the __________

A

mandible ; condylar process

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25
Q

the neurocranium grows ____ and ______

A

up and back

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26
Q

the maxilla is displaced _______ and _______

A

anteriorly (to the right) and down

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27
Q

expansion of the facial skeleton accompanies growth of the brain and soft tissues - this is called

A

bone drift

28
Q

the maxillary tuberosity grows ________ and _______ to accommodate new teeth

A

down (posteriorly)

to the right (inferiorly)

29
Q

there is no _______ covering the articular surfaces in the skull

A

epithelium

30
Q

small opening of jaw

A

rotation

31
Q

large opening of jaw

A

translocation (pushing forward)

32
Q

dorsal portion of articular eminence is in-between the

A

disc and skull

33
Q

the ventral portion of the articular eminence is between the

A

disc and condyle

34
Q

TMJ is formed most by __________ which is rich in ___________

A

fibrous CT ; collagen 1

35
Q

there is no ________ present on any of the surfaces of the TMJ

A

epithelium

36
Q

what makes up parts of the TMJ (4 parts)

A

articular eminence
articular fossa
articular disc
condylar process

37
Q

what are the 4 stages of the condylar process formation

A

proliferation
hypertrophy
calcification
ossification

38
Q

since the end product of the condylar/articular process is ossification, eventually we will only have a thin layer of _________ in the condylar process and a thick layer of ______________

A

fibrocartilage ; dense & fibrous CT

39
Q

the alveolar process is derived from

A

NCCs

40
Q

the neural portion = the body of the jaw will

A

stay no matter what

41
Q

the formation of the alveolar process occurs as the body of the mandible forms which is seen as

A

vertical growth of bone during bell stage

42
Q

development of the alveolar process accompanies

A

deciduous and permanent tooth

eruption

43
Q

3 components of the alveolar process

A

alveolar bone proper (ABP)

cortical bone plate (CP)

spongiosum (trabecular) bone

44
Q

the alveolar bone proper lines the ______ and has direct contact with the _______

A

alveolus ; roots

45
Q

the cortical bone plate forms ______ and ______ surfaces

A

lingual and facial

46
Q

the spongiousm bone connects

A

ABP and CP

47
Q

alveolar bone proper is identified as what in radiographs

A

lamina dura

48
Q

alveolar bone proper is composed of _______ bone and _______ bone

A

bundle and compact

49
Q

bundle bone is much richer in organic content so it does not show

A

osteon organization

50
Q

what is the deeper portion of the alveolar bone

A

compact bone

51
Q

bundle bone has an abundance of __________ fibers which are abundant in what type of collagen

A

Sharpey’s fibers ; type 1

52
Q

supporting alveolar bone is composed of the

A

cortical plate and spongiosum

53
Q

which teeth have little presence of spongiosum

A

anterior

54
Q

the alveolar process adapts during growth to achieve proper

A

occlusion

55
Q

facial translocation of teeth occurs in association with

A

enlargement of the face

56
Q

tension on bone =

A

deposit bone

57
Q

pressure on bone =

A

resorb bone

58
Q

tension and pressure on bone is the effect of

A

mesial drift

59
Q

signs of mesial drift: compress side =

A

resorption

60
Q

signs of mesial drift: tension side =

A

deposition

61
Q

simultaneous deposition of bone by osteoblast and remodeling by osteoclast is called

A

coupling

62
Q

osteoblasts produce

A

Howship’s lacuna

63
Q

the direction of drift follows the side with

A

deposition (appears smooth)

64
Q

what gives the curvy shape in drift images

A

Howship’s Lacuna

65
Q

no teeth = no

A

alveolar bone

66
Q

alveolus that is too thin

A

fenestration

67
Q
A

809 - Exam 1 Block (19 decks)

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