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809 - Exam 1 Block > Palate - E Davis > Flashcards

Palate - E Davis Flashcards

1
Q

The stomodeum is separated from the endodermal gut tube by the _________ membrane

A

buccopharyngeal

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2
Q

Buccopharyngeal membrane ruptures by week

A

4

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3
Q

when the buccopharyngeal membrane ruptures there is now open communication between the ________ and ________

A

amniotic cavity and gut tube

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4
Q

what forms the forehead, nose, and upper boundary of mouth

A

frontonasal prominence

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5
Q

A paired ________ prominence from pharyngeal arch 1 form the lateral boundaries of mouth and portions of upper lip

A

maxillary

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6
Q

A paired _________ prominence from pharyngeal arch 1 forms the inferior boundary of
the mouth

A

mandibular

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7
Q

Maxillary prominences increase in size and grow ______

A

medially

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8
Q

Maxillary prominences increasing in size and growing medially compresses the ___________ prominences toward the _________

A

medial nasal ; midline

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9
Q

The ________ is formed from the two maxillary and the two medial nasal prominences

A

upper lip

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10
Q

Initially the nasal cavity and
oral cavity are _______

A

continuous

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11
Q

When developed the palate
separates the ______ cavity
from the oral cavity

A

nasal

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12
Q

Primary palate begins to
develop early in week

A

6

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13
Q

for primary palate development: first, medial nasal prominences merge to form the

A

intermaxillary segment

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14
Q

Intermaxillary segment gives rise to what 3 things

A

labial component

upper jaw component

palatal component

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15
Q

The labial component forms the _______ of upper lip

A

philtrum

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16
Q

The upper jaw component carries the

A

4 incisors

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17
Q

The palatal component forms the ______________ plate

A

triangular primary palate

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18
Q

The portion of the palate that is anterior and midline aka the small portion that is anterior to incisive foramen

A

primary palate

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19
Q

Also, early in week 6 the
_______ palate begins to
develop

A

secondary

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20
Q

For the secondary palate, maxillary prominences expand medially and give
rise to two projections
called

A

palatal shelves

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21
Q

What develops into the majority of the hard and all of soft palate

A

Secondary palate

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22
Q

The palatal shelves initially
project infero-medially
on each side of the _____

A

tongue

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23
Q

During weeks 7 and 8,
the palatal shelves
ascend and assume a
_______ position, making the tongue ______ to the palate now

A

horizontal ; inferior

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24
Q

when portions of the lip fail to fuse

A

cleft lip

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25
Q

when portions of the palate fail to fuse

A

cleft palate

26
Q

when these clefts occur
together, rather than in isolation

A

cleft lip and palate

27
Q

Medial nasal prominences fail to fuse in midline to form the philtrum portion of the intermaxillary segment - what kind of cleft lip?

A

median cleft lip

28
Q

Maxillary prominence fails to fuse with medial nasal prominence - what kind of cleft lip?

A

Unilateral or bilateral cleft lip

29
Q

Maxillary prominence fails to fuse with medial and lateral nasal prominence AND the cleft extends onto face - what is this called?

A

Unilateral or bilateral oblique facial cleft

30
Q

Cleft palate 1

A

soft palate only

31
Q

Cleft palate 2

A

hard and soft palate, but secondary palate only

32
Q

Cleft palate 3

A

entirety of hard and soft palate, primary and secondary palates

33
Q

what is the dividing landmark for cleft defects

A

incisive foramen

34
Q

cleft in palate and/or lip
structures anterior to the incisive foramen
(unilateral or bilateral) - what kind of defect?

A

anterior cleft defect

35
Q

clefts in palate
posterior to incisive foramen (clefts of the secondary palate) - what kind of defect?

A

posterior cleft defect

36
Q

combination of
anterior and posterior cleft defects - what kind of defect?

A

complete cleft defect

37
Q

anterior boundary of the developed nose

A

nostrils (nares)

38
Q

posterior boundary of the developed nose

A

choanae (opening/doorway between the nasal cavity and nasopharynx)

39
Q

the developed nose is divided at the midline by the

A

nasal prominence

40
Q

By the end of week 4, _________ develop on each side of the frontonasal prominence

A

nasal placodes

41
Q

Margins of the placodes proliferate, producing a horse-shoe shaped elevation surrounding the nasal placode –> nasal placodes now in a depression called the

A

nasal pits

42
Q

Frontal prominence gives rise to the _____ of the nose

A

root

43
Q

Merged medial nasal prominences form the _______ and ______ of the nose

A

crest and apex (tip)

44
Q

Lateral nasal prominences form the ______ of the nose

A

alae (sides)

45
Q

During the sixth week, the nasal pits ________ considerably

A

deepen

46
Q

Each nasal sac grows

A

dorsally

47
Q

At first, the oronasal membrane separates the nasal sacs from the

A

oral cavity

48
Q

By the end of week 6, oronasal membrane

A

ruptures

49
Q

Nasal and oral cavities are in communication by way of

A

primitive choanae

50
Q

Later the choanae are pushed _______ with further
development of secondary palate and will then be located at junction of
_______ and ________

A

posteriorly ; nasal cavity ; pharynx

51
Q

the nasal septum grows ______

A

inferiorly

52
Q

By week 12 the nasal septum _______ with the newly formed palate

A

fuses

53
Q

failure of the oronasal
membrane to rupture

A

Choanal atresia

54
Q

Paranasal sinuses develop from _______ of the lateral walls of the nasal cavities

A

diverticula (outgrowths)

55
Q

The parental sinuses extend into bones of same name to become pneumatic (air-filled)
extensions of the nasal cavities - what are the names of these 4 sinuses?

A

frontal
maxilla
ethmoid
sphenoid

56
Q

Paranasal sinuses develop _________ on differing ________

A

independently

timelines

57
Q

Maxillary sinuses begin to develop during _______ fetal life

A

late

58
Q

the maxillary sinuses grow _______ until puberty

A

slowly

59
Q

the maxillary sinuses are not fully developed until all ___________ have erupted in early adulthood

A

permanent teeth

60
Q

Which 2 sinuses develop after birth

A

Frontal and sphenoid

61
Q

which sinuses begin to grow more rapidly at 6-8 years

A

ethmoid

62
Q

What adds resonance to voice during adolescence

A

growth of sinuses

809 - Exam 1 Block (19 decks)

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