Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NS Exam 1 > Development of Orofacial structures > Flashcards

Development of Orofacial structures Flashcards

1
Q

What does the viscerocranium become?

A

Facial skeleton

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What bones form from the cartilagenous neurocranium?

A
  1. Occipital B.
  2. Body of sphenoid
  3. Ethmoid B.

Temporal B.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What bones arise from the membranous neurocranium?

A

Frontal and parietal Bs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What bone initially begins as part of the viscerocranium and then migrates to become part of neurocranium?

A

Frontal B.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Male newborn pt presents with a long, narrow, wedge-shaped head. What is the most likely diagnosis? This most likely results from premature closure of what suture?

A

Scaphocephaly

Sagittal suture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Male infant that has a high, tower-like head may have what disorder? From premature closure of what suture?

A

Brachycephaly

Coronal suture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

An infant presenting with a twisted, asymmetric head may have what disorder? Due to premature closure of what suture?

A

Plagiocephaly

Coronal suture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A premature closure of the frontal (metopic) suture may result in what disorder? What bones does this affect?

A

Trigonocephaly

Frontal and orbital Bs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What separates the facial primordia from the primordial pharynx? In what week does this rupture?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

In what weeks does facial development occur?

A

Weeks 4-8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

At the end of the 4th week, what forms on the inferolateral parts of the frontal nasal prominence?

A

Nasal placodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the direct embryonic origin of the deep portion of the philtrum of the upper lip?

A

Intermaxillary segment of MNPs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What pharyngeal arch do the muscles of facial expression come from?

A

2nd PA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What pharyngeal arch do the muscles of mastication arise from?

A

PA1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the critical period for palatogenesis?

A

Weeks 6-9 (finishes development at 12)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the embryonic origin of the superficial portion of the philtrum of the upper lip?

A

Maxillary prominence

17
Q

What part of the palate does the intermaxillary segment give rise to?

A

Primary palate

18
Q

What is the embryonic origin of the secondary palate?

A

Lateral palatine processes (shelves) from the maxillary prominences

19
Q

What embryonic structures failed to fuse in cleft lip?

A

Maxillary prominences and median nasal prominences

20
Q

What structures failed to fuse in a cleft palate?

A

Lateral palatine process w/ nasal septum and/or medial palatine process

21
Q

When is the period of development of the nasal septum?

A

Weeks 9-12

22
Q

Merged lateral lingual swellings form what part of the tongue?

A

Anterior 2/3

23
Q

What pharyngeal arch does the anterior tongue arise from?

A

PA1

24
Q

What are the contributions of PAs 2,3, and 4 to form the posterior 1/3 of the tongue?

A

PA2 (ventromedial) - Copula

PA 3/4 (ventromedial) - hypopharyngeal eminence

Hypopharyngeal eminence overgrows copula to form posterior 1/3 of tongue

25
Q

What embryological structures do tongue muscles arise from?

A

Myoblasts of occipital myotomes

NOT NCC

26
Q

What is glossoschissis?

A

Bifid tongue (abnormal fusion of lateral lingual swellings)

27
Q

What is ankyloglossia?

A

Attachment between tongue and floor of oral cavity is too long and anchors tongue down, limiting movement

28
Q

What is the order of tooth bud formation? In what week?

A

Anterior mandibular => anterior maxillary => posterior

Week 6

29
Q

What cells produce dentin?

A

Odontoblasts from dental papilla cells

30
Q

What cells produce enamel?

A

Ameloblasts from inner enamel epithelium

31
Q

What stage of odontogenesis are inner enamel and outer enamel epithelium formed?

A

Cap stage

32
Q

What stage of odontogenesis are dentin and enamel formed?

A

Bell stage

33
Q

What forms from fusino of the IEE and OEE?

A

Epithelial root sheath => dental root/dental sac

34
Q

What forms the collagen ligament that anchors tooth to bone?

A

Outer cells of the dental sac

35
Q

What cells are responsible for degenerating roots of baby teeth to make room for permanent teeth?

A

Osteoclasts

NS Exam 1 (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions