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ANA 203 > Development Of Face > Flashcards

Development Of Face Flashcards

1
Q

facial primoridia appear early in the—— week around——-

A

fourth

primoridal stomodeum

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2
Q

primoridal stomodeum is also known as——-??

A

Primitive mouth

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3
Q

5 facial primoridia appear as—— around the——.

List them

A

prominences

stomodeum

the single frontonasal prominence

the paired maxillary prominences

the paired mandibular prominences

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4
Q

Derivatives of the single frontonasal prominence

A

(Forehead, nose, nasal cavity,Philtrum of upper lip,nasal septum)

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5
Q

Derivatives of the paired maxillary prominences

A

(Lateral part of upper lip,upper part of cheek)

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6
Q

Derivatives of the paired mandibular prominences

A

(Chin, lower lip, lower parts of cheek)

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7
Q

the paired facial prominences are derivatives of the—— of pharyngeal arches

A

first pair

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8
Q

the prominences are produced mainly by the proliferation of—- that migrate from the——- and——- regions of the ——and into the pharyngeal arches during the—— week

A

neural crest cells

mesencephalon

rhombencephalon

neural folds

fourth

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9
Q

rhombencephalon also known as

A

Hind Brain

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10
Q

NASAL PLACODES appear by——

A

end of fourth week

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11
Q

NASAL PLACODES are 2 bilateral oval thickenings of the ——of the——- prominence

A

surface of the ectoderm

frontonasal

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12
Q

Nasal placodes are the primoridia for the——- and——

A

nose

nasal cavities

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13
Q

initially nasal placodes are—-, then they stretch to produce a—- in each placode by——-

  • )——in the margins of the placode proliferates,producing——— shaped elevations called—— and—— prominences
  • )depression between the 2 prominences is called ‘——-’ which is continuous with the stomodeum below
A

convex

flat depression

invaginating into the underlying mesoderm

horse-shoe

medial; lateral

nasal pit

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14
Q

__ is the primordia for nostrils

A

Nasal pits

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15
Q

———are the main source of the connective tissue components like muscles , cartilage, bone , and ligaments in the facial and oral region

A

mesenchymal cells

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16
Q

median nasal process thins out gradually to form ——-

A

primitive nasal septum.

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17
Q

globular processes of—— nasal processes fuse to form ——-

A

medial

philtrum of the upper lip.

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18
Q

the paired maxillary prominences form the——— boundaries of the——

A

primitive mouth

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19
Q

the paired mandibular prominences makeup the—— boundary of the——

A

caudal

primitive mouth

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20
Q

between the—- and—— weeks, the 2 medial nasal prominences merge with each other and with the maxillary and lateral nasal prominences

A

7th

8th

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21
Q

merging of medial nasal and maxillary prominences forms the continuity of—— and—— and seperation of—— from——

A

upper jaw

upper lip

nasal pit

stomodeum

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22
Q

The surface opening of stomodeum forms the ———. Lateral angles of it are formed by fusion of—— and—— processes.

A

oral fissure

maxillary

mandibular

23
Q

sensory innervation of upper lip is derived from——- nerves.

A

maxillary

24
Q

——-nerve supplies the parts gotten from the frontonasal prominence

A

opthalamic division of trigeminal

25
Q

——and——- are first parts of the face to form

A

lower jaw

lower lip

26
Q

Lower jaw and lip result from merging of the—— ends of the—— prominences in the—— plane

A

medial

mandibular

median

27
Q

each lateral nasal prominence is seperated from the——- prominence by a cleft called——— that is lined with——- cells

A

maxillary

nasolacrimal groove

ectodermal

28
Q

Thickening of the—— cells that line the nasolacrimal groove forms the——- that detaches from the—— and sink in the—- and gets recanalized to form the———

A

ectodermal

ectodermal cord

ectoderm

mesoderm

nasolacrimal duct

29
Q

Upper end of nasolacrimal duct widens to form the——-

A

lacrimal sac.

30
Q

The nasolacrimal duct becomes completely patent only ——-and communicates with ——caudally and with——- cephalically

A

after birth

nasal cavity

conjunctival sac

31
Q

In adults the nasolacrimal duct runs from ———to——-

A

medial angle of the eye

inferior meatus of the nasal cavity

32
Q

inferior meatus of the nasal cavity is an air passage located between ——and——-

A

inferior nasal concha

lateral nasal wall

33
Q

——-forms the bridge of the nose.
——-form dorsum and tip of the nose.
———-form sides and alae of the nose.

A

The frontonasal process

Two fused medial nasal processes

Two lateral nasal processes

34
Q

Intermaxillary Segment of Face is formed by——

A

fusion of the medial nasal processes

35
Q

Intermaxillary Segment of Face has 3 components.
Labial component that forms the——-
-Upper jaw component that forms the ——-
-Palatal component that forms ———

A

philtrum of the upper lip

(alveolar process) that carries four incisor teeth.

triangular primary palate (also called premaxilla).

36
Q

The primary palate develops from the——— and secondary palate develops from the——-

A

frontonasal process

maxillary processes.

37
Q

Cleft lip commonly occurs in the—- lip

A

upper

38
Q

Cleft lip occurs—— births and 60–80% of children involved are what gender??

A

1 in 1000

males.

39
Q

cleft upper lip presents three varieties.List them

A

Unilateral cleft lip

Bilateral cleft lip

Central cleft lip

40
Q

Central cleft lip is also called???

A

Hair lip

41
Q

Unilateral cleft lip occurs due to failure of—-

Bilateral cleft lip occurs due to failure of——

hair lip occurs due to failure of——-

A

fusion of maxillary process with the medial nasal process of the same side

fusion of maxillary processes with the frontonasal process.

development of philtrum of the upper lip from the frontonasal process.

42
Q

Lower cleft lip is Very—- and is due to——-

A

rare

the two mandibular processes may fail to fuse in the midline

43
Q

oblique facial cleft aka ——?

A

orbitofacial fissure

44
Q

oblique facial cleft. Rare or common

A

Rare

45
Q

oblique facial cleft occurs when——

A

maxillary process fails to fuse with the lateral nasal process.

46
Q

The orbitofacial fissure extends from—— to the——. Making the nasolacrimal duct——-

A

medial angle of the eye

upper lip.

exposed to the exterior.

47
Q

oblique facial cleft. Usually bilateral or unilateral

A

Bilateral

48
Q

Microstomia and macrostomia basically mean——?

A

small and large mouth

49
Q

Initially the lateral angle of mouth extends——
- Subsequently in normal conditions the angles of mouth gradually shift—- by fusion between the—- and—— processes till normal adult position is reached.

A

much laterally close to auricle.

medially

maxillary; mandibular

50
Q

The excessive fusion of the mandiblular and maxillary processes lead to ——
- arrest of this fusion leads to——.

A

microstomia

macrostomia

51
Q

Most common cleft lip is——-

-Most rare cleft lip is——

A

unilateral cleft of upper lip

median cleft of lower lip

52
Q

Commonest cause of cleft lip with or without cleft palate is——- which is a combination of—- and—— factors)

A

Multifactorial inheritance

genetic

environmental

53
Q

Examples of first arch syndromes include ____ syndrome and _____ syndrome.

A

Treacher Collins

Pierre Robin

ANA 203 (26 decks)

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