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Riddhi Chawla > Face Development > Flashcards

Face Development Flashcards

1
Q

………… is formed following series of cell divisions.

A

Morula

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2
Q

The outer cell mass ………………… of the morula differentiates into the structures that
nourish the embryo.

A

Trophoblast cells

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3
Q

Accumulation of fluid within egg cell mass (morula, C) leads to development of …………….

A

Blastula

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4
Q

The initial, two layered …………. And …………embryonic disk is converted into three layered disk.

A

(epiblast and hypoblast)

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5
Q

Floor of amniotic cavity formed by the …………….. ………. of the bilaminar embryo.

A

ectodermal layer

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6
Q

A narrow groove terminating into a circular expression called the …………. ……

A

Primitive node

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7
Q

The primitive streak is the result of proliferation of the cells of ……….. (the later ectoderm).

A

Epiblast

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8
Q

………………. -conversion of the bilaminar embryo into trilaminar embryo

A

Gastrulation

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9
Q

The cells from the cranial part of the primitive streak known as primitive knot, migrate in the midline between ectoderm and endoderm up to the prechordal plate giving rise to the …………….

A

Notochord

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10
Q

The notochordal cells induce the overlying ectoderm to form neural plate that forms neural groove with ………. ……… ……….at its edges.

A

Neural crest cells

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11
Q

Interaction between the cells causes the ………….. ……….differentiate into paraxial, intermediate, and lateral plate of mesoderm

A

mesodermal cells

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12
Q

The paraxial mesoderm cells give rise to ………… into which dermatome (dermis), myotome (muscles), and sclerotome (bones) are differentiated.

A

Somites

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13
Q

The neural crest cells are ………… …….

A

multipotent cells

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14
Q

The enamel organ develops from the ………..

A

Ectoderm

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15
Q

The ectomesenchyme consists of ……… …….. …….. and ……………… cells.

A

neural crest cells and mesodermal cells

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16
Q

The migration of sufficient number of neural crest cells is essential for the normal growth of ….. region.

A

Head

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17
Q

The gradual appearance of …………….. ………… contributes to the development of the face and neck.

A

pharyngeal (branchial) arches

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18
Q

The conversion of two layered (epiblast and hypoblast) embryonic disk into three layered disk is known as ?

A

Gastrulation

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19
Q

…………………. adjoining the ………….. gives rise to pharyngeal arches.

A

Mesodermal proliferation and primitive pharynx

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20
Q

Out of six arches found, the ….. one disappears soon.

A

fifth

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21
Q

The first pharyngeal arch (mandibular arch) mesoderm gives rise to the ………….

A

Muscles

22
Q

The first arch:

A

Mandibular nerve
Maxillary artery
Chorda tympani

23
Q

The second arch:

A

Facial nerve
Stapedial artery

24
Q

Third arch:

A

Glossopharyngeal nerve
Internal carotid arteries

25
Q

Forth arch:

A

Superior laryngeal nerve
Arch of aorta

26
Q

Sixth arch:

A

Recurrent laryngeal nerve

27
Q

The pre-trematric nerve of this arch is the ……….. ……… ……..

A

chorda tympani nerve

28
Q

The cartilage of the first arch

A

The Meckel’s cartilage

29
Q

The cartilage of this arch

A

the Reichert’s cartilage

30
Q

In the third pharyngeal arch mesoderm, ……………… muscle is formed and is supplied by the ……………… nerve

A

stylopharyngeus and glossopharyngeal

31
Q

From the mesoderm of the ……. and ……… pharyngeal arches cartilages of the larynx are formed.

A

fourth and sixth

32
Q

Of the pharyngeal clefts (ectodermal) the first one gives rise to ………… ………. ………….. and the remaining get submerged deep to the caudally growing second arch.

A

external acoustic meatus

33
Q

The facial prominences, namely, …………. , ……….. , and …………. , gives rise to the formation of the face

A

frontonasal, maxillary and mandibular

34
Q

The ……….. ……….. are formed in the frontonasal process as a result of ectodermal proliferation.

A

olfactory placodes

35
Q

Olfactory epithelium is derived from the ……..

A

Placodes

36
Q

The fusion of the prominences bounding the ………….. results in the formation of the face.

A

stomodeum

37
Q

Frontonasal, maxillary, and mandibular, gives rise to the formation of the ……

A

Face

38
Q

The olfactory placodes are formed in the frontonasal process as a result of …………… ……………

A

ectodermal proliferation

39
Q

The fusion of the prominences bounding the …………… results in the formation of the face.

A

Stomodeum

40
Q

The palate is formed by the union of primary and secondary palates.
The primary palate being formed by the …………….. …………………The secondary by palatal process of ………………. ……………….

A

frontonasal process and maxillary prominences.

41
Q

The tongue is the result of fusion of …………….. ……….., the lingual swellings (first arch) and copula (second arch) and cranial part of the hypobranchial eminence (third and fourth arches)

A

tuberculum impar

42
Q

1-st arch

A

Anterior 2\3

43
Q

The muscles of the tongue are formed in the occipital myotomes with their …………… ………….

A

hypoglossal nerve

44
Q

Lingual swellings and Tuberculum impar form the following part of the tongue?

A

Anterior 2/3rd mucosa

45
Q

The taste sensations of the anterior 2/3rd of the tongue are carried by ?

A

Chorda tympani nerve

46
Q

The general sensory sensations of the anterior 2/3rd of the tongue are carried by ?

A

Lingual nerve

47
Q

Muscles of the tongue except palatoglossus are supplied by?

A

Hypoglossal nerve

48
Q

Cleft lip may be ……………. or ………… and may be associated with cleft palate.

A

unilateral or bilateral

49
Q

Primary palate is formed by?

A

Frontonasal process

50
Q

Failure of fusion of lateral lingual prominences may lead to

A

Bifid Tongue

51
Q

Failure of fusion of maxillary process with lateral nasal process results in

A

Oblique facial cleft

Riddhi Chawla (2 decks)

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