Palate - E Davis

Question 1

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

Answer 1

buccopharyngeal

Question 2

Buccopharyngeal membrane ruptures by week

Answer 2

4

Question 3

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

Answer 3

amniotic cavity and gut tube

Question 4

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

Answer 4

frontonasal prominence

Question 5

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

Answer 5

maxillary

Question 6

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

Answer 6

mandibular

Question 7

Maxillary prominences increase in size and grow ______

Answer 7

medially

Question 8

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

Answer 8

medial nasal ; midline

Question 9

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

Answer 9

upper lip

Question 10

Initially the nasal cavity and
oral cavity are _______

Answer 10

continuous

Question 11

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

Answer 11

nasal

Question 12

Primary palate begins to
develop early in week

Answer 12

6

Question 13

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

Answer 13

intermaxillary segment

Question 14

Intermaxillary segment gives rise to what 3 things

Answer 14

labial component

upper jaw component

palatal component

Question 15

The labial component forms the _______ of upper lip

Answer 15

philtrum

Question 16

The upper jaw component carries the

Answer 16

4 incisors

Question 17

The palatal component forms the ______________ plate

Answer 17

triangular primary palate

Question 18

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

Answer 18

primary palate

Question 19

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

Answer 19

secondary

Question 20

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

Answer 20

palatal shelves

Question 21

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

Answer 21

Secondary palate

Question 22

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

Answer 22

tongue

Question 23

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

Answer 23

horizontal ; inferior

Question 24

when portions of the lip fail to fuse

Answer 24

cleft lip

Question 25

when portions of the palate fail to fuse

Answer 25

cleft palate

Question 26

when these clefts occur together, rather than in isolation

Answer 26

cleft lip and palate

Question 27

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

Answer 27

median cleft lip

Question 28

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

Answer 28

Unilateral or bilateral cleft lip

Question 29

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

Answer 29

Unilateral or bilateral oblique facial cleft

Question 30

Cleft palate 1

Answer 30

soft palate only

Question 31

Cleft palate 2

Answer 31

hard and soft palate, but secondary palate only

Question 32

Cleft palate 3

Answer 32

entirety of hard and soft palate, primary and secondary palates

Question 33

what is the dividing landmark for cleft defects

Answer 33

incisive foramen

Question 34

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

Answer 34

anterior cleft defect

Question 35

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

Answer 35

posterior cleft defect

Question 36

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

Answer 36

complete cleft defect

Question 37

anterior boundary of the developed nose

Answer 37

nostrils (nares)

Question 38

posterior boundary of the developed nose

Answer 38

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

Question 39

the developed nose is divided at the midline by the

Answer 39

nasal prominence

Question 40

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

Answer 40

nasal placodes

Question 41

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

Answer 41

nasal pits

Question 42

Frontal prominence gives rise to the _____ of the nose

Answer 42

root

Question 43

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

Answer 43

crest and apex (tip)

Question 44

Lateral nasal prominences form the ______ of the nose

Answer 44

alae (sides)

Question 45

During the sixth week, the nasal pits ________ considerably

Answer 45

deepen

Question 46

Each nasal sac grows

Answer 46

dorsally

Question 47

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

Answer 47

oral cavity

Question 48

By the end of week 6, oronasal membrane

Answer 48

ruptures

Question 49

Nasal and oral cavities are in communication by way of

Answer 49

primitive choanae

Question 50

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

Answer 50

posteriorly ; nasal cavity ; pharynx

Question 51

the nasal septum grows ______

Answer 51

inferiorly

Question 52

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

Answer 52

fuses

Question 53

failure of the oronasal membrane to rupture

Answer 53

Choanal atresia

Question 54

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

Answer 54

diverticula (outgrowths)

Question 55

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?

Answer 55

frontal maxilla ethmoid sphenoid

Question 56

Paranasal sinuses develop _________ on differing ________

Answer 56

independently timelines

Question 57

Maxillary sinuses begin to develop during _______ fetal life

Answer 57

late

Question 58

the maxillary sinuses grow _______ until puberty

Answer 58

slowly

Question 59

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

Answer 59

permanent teeth

Question 60

Which 2 sinuses develop after birth

Answer 60

Frontal and sphenoid

Question 61

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

Answer 61

ethmoid

Question 62

What adds resonance to voice during adolescence

Answer 62

growth of sinuses