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Oral Histology Midterm I > Formation of Face & Oral Cavity > Flashcards

Formation of Face & Oral Cavity Flashcards

1
Q

An Organization level involved in the growth and development of an organ and organism.

A

Formation

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2
Q

Increase in weight and spatial dimensions (shape) that an organ or organism undergo.

A

Growth

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3
Q

The growth of an organ or organism through various formative stages on its way to maturity.

A

Development

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4
Q

Formation of the face occurs during weeks ___-___

A

3-5 week

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5
Q

*During what week is the crown-rump measurement 3 mm.

A

3rd embryonic week

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6
Q

*During what week is the crown-rump measurement 30 mm.

A

8th week in utero; start of fetal stage

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7
Q

*During the 3rd week of development, the _______ appears and becomes the ____ and _____ cavities between the 6th and 8th embryonic week.

A

The stomodeum becomes the nasal and oral cavities in weeks 6-8.

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8
Q

Superior Boundary of Stomodeum (3rd week)

A

Frontal Prominence

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9
Q

Inferior Boundary of Stomodeum (3rd week)

A

Cardiac Plate

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10
Q

Posterior Boundary of Stomodeum (3rd week)

A

Buccopharyngeal membrane

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11
Q

Branchial Arch I is becomes _____

during the 4th embryonic week.

A

Maxillary & Mandibular (R&L) facial processes

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12
Q

Branchial Arches and Clefts, ____ and ____ during the 4th week of embryonic development.

A

Appear and Disappear

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13
Q

What lies between the two facial processes that separate branchial arch I?

A

The stomodeum (not one of the clefts)

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14
Q

The place where the upper maxillary and lower mandibuluar processes meet at either side of the stomodeum becomes the _____.

A

Commissura labiorum oris (lip end)

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15
Q

What replaces the cardiac plate as the lower boundary of the stomodeum during the 4th embryonic week?

A

2 Mandibular facial processes

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16
Q

What become the posterior lateral boundaries of the stomodeum during the 4th embryonic week?

A

2 Maxillary facial processes

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17
Q

During week 4, _____ appear within the frontal prominence

A

2 Nasal pits

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18
Q

After the appearance of nasal pits, the frontal prominence becomes 3 processes:

A

Median Nasal facial process and R&L Lateral Nasal facial processes—these replace the frontal prominence as the superior boundary of the stomodeum

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19
Q

Nasal _____ deepin and become nasal ____ that open into the stomodeum

A

Nasal pits & Nasal ducts

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20
Q

Nasal ducts become _____, which open into nasal ____ during the formation of nasal & oral cavities.

A

Nostrils which open into nasal cavities

21
Q

*During the 4th embryonic week, the Frontal prominence becomes which 3 (of 7) facial processes.

A

Median nasal process, R&L Lateral Nasal Processes

22
Q

*During the 4th embryonic week, Branchial arch I becomes which 4 (of 7) facial processes.

A

R&L Maxillary processes and R&L Mandibular processes

23
Q

A cleft palate is indicative during what week of embryonic development?

A

4th week (1 in 800 births)

24
Q

Outer median nasal process becomes:

A
  • Midline of Nose

- Philtrum of upper lip

25
Q

Outer lateral nasal process becomes:

A
  • Lateral sides & ala of nose

- Infraorbital part of face

26
Q

Median and lateral nasal facial processes arose from what structure that was present during the 3rd week IU?

A

Frontal Prominence

27
Q

Maxillary processes become:

A
  • Upper part of Cheeks

- Lateral parts of upper lip

28
Q

Mandibular processes become:

A
  • Lower part of Cheeks
  • Lower lip
  • Chin
29
Q

Maxillary and Mandibular processes arose from:

A

Branchial Arch I

30
Q

Cleft I becomes what during week 4

A

External Auditory Meatus

31
Q

Arch II becomes an embryonic fold of tissue called:

A

Operculum

32
Q

The Operculum covers Arches ___ & ___ and Clefts ___, ___, and ___.

A

Arches 3 & 4;

Clefts 2, 3, 4

33
Q

unilateral or bilateral clefting of the upper lip occurs if

A

The maxillary facial process or processes do not merge with the median nasal facial process by the 5th embryonic week.

34
Q

The primary palate is the ______ side of the median nasal process

A

stomodeum side

35
Q

The upper lip is made of which 3 facial processes

A

R&L Maxillary facial processes and Median nasal fascial process

36
Q

The lower lip is made of which 2 facial processes

A

R&L Mandibular processes

37
Q

The Cardiac Plate is replaced by

A

The mandibular facial processes during week 4 IU

38
Q

The Buccopharyngeal membrane ruptures allowing opening into the foregut that becomes the ___ and ___ .

A

The nasal and oral pharynx

39
Q

The Buccopharyngeal membrane is the site of the ______ ____ ___ _____.

A

The anterior pillar of fauces

40
Q

The embryonic ____ is the site of the future oral pharynx (throat)

A

Foregut

41
Q

Formation of the tongue occurs during which week of embryonic development

A

4th week

42
Q

__ lingual swellings appear during the 4th embryonic along the ventral, inside surface of mandibular process of branchial arch __, __, and __.

A

1, 2, 3

43
Q

The buccopharyngeal membrane ruptures during the 4th week, 4 lingual swellings merge to become the ____.

A

Tongue

44
Q

*4 Lingual Swellings:

A

Right Lateral Lingual Swelling
Left Lateral Lingual Swelling
Tuberculum impar
Copula

45
Q

What swellings become the anterior 2/3 of the tongue

A

Tuberculum impar & 2 Lateral lingual swellings (R&L)

46
Q

What swelling becomes the posterior third/root of tongue

A

Copula

47
Q

The tongue is positioned in the

A

Stomodeum

48
Q

During the 6th embryonic week, the stomodeum is partitioned into the ___ and ____ cavities

A

oral and nasal cavities

49
Q

The formation of (secondary) palate and oral cavity occurs during which embryonic weeks

A

6-8th embryonic weeks

Oral Histology Midterm I (1 decks)

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