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practical moving exam (embryo) > fuck eat > Flashcards

fuck eat Flashcards

1
Q

18hr Chick Prominent Structures

A

Neural groove, primitive streak

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2
Q

18hr Chick New Structures

A

Neural folds

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3
Q

18hr Chick Adjacent Structures

A

Presumptive notochord, mesodermal cells

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4
Q

18hr Chick Number of Somites

A

3 pairs

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5
Q

18hr Chick Size

A

~2 mm

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6
Q

18hr Chick Germ Layers

A

Ectoderm (neural folds), mesoderm, endoderm

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7
Q

18hr Chick Primary Vesicles

A

Neural plate forming

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8
Q

18hr Chick Adult Derivatives of Primary Vesicles

A

Forebrain (prosencephalon), midbrain (mesencephalon), hindbrain (rhombencephalon) emerge

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9
Q

24hr Chick Prominent Structures

A

Neural groove, primitive streak

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10
Q

24hr Chick New Structures

A

Forebrain, heart tube

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11
Q

24hr Chick Lost/Regressed Structures

A

Primitive streak regressing

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12
Q

24hr Chick Adjacent Structures

A

Heart adjacent to foregut

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13
Q

24hr Chick Number of Somites

A

~4-5 pairs

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14
Q

24hr Chick Size

A

~3 mm

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15
Q

24hr Chick Flexure

A

Cranial flexure beginning

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16
Q

24hr Chick Primary Vesicles

A

Prosencephalon, mesencephalon, rhombencephalon

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17
Q

24hr Chick Adult Derivatives of Primary Vesicles

A

Prosencephalon → Telencephalon, diencephalon; mesencephalon unchanged; rhombencephalon → metencephalon, myelencephalon

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18
Q

33hr Chick Prominent Structures

A

Closed neural tube, optic vesicles

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19
Q

33hr Chick New Structures

A

First pharyngeal arch, cardiac looping

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20
Q

33hr Chick Lost/Regressed Structures

A

Primitive streak nearly absent

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21
Q

33hr Chick Adjacent Structures

A

Head prominent over yolk sac

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22
Q

33hr Chick Number of Somites

A

~12-13

23
Q

33hr Chick Size

A

~4 mm

24
Q

33hr Chick Flexure

A

Pronounced cranial flexure

25
Q

33hr Chick Chick Turning

A

Turning begins (right)??

26
Q

33hr Chick Germ Layers

A

Ectoderm (neural ectoderm forming brain and neural crest), mesoderm, endoderm

27
Q

33hr Chick Adult Derivatives of Primary Vesicles

A

Same as 24hr stage, but optic vesicle development and brain regionalization more distinct

28
Q

42hr Chick Prominent Structures

A

Heart looping, lens placodes

29
Q

42hr Chick New Structures

A

Limb bud formation, otic vesicles

30
Q

42hr Chick Lost/Regressed Structures

A

Neural groove fused

31
Q

42hr Chick Adjacent Structures

A

Developing forelimb buds

32
Q

42hr Chick Number of Somites

A

~26

33
Q

42hr Chick Size

A

~7mm

34
Q

42hr Chick Flexure

A

Cranial and cervical flexure

35
Q

42hr Chick Chick Turning

A

Right-side turning??

36
Q

42hr Chick Germ Layers

A

Ectoderm forms sensory structures; mesoderm drives body segmentation

37
Q

48hr Chick

A

Development of optic vesicles (retina, optic nerves), otic vesicles (inner ear), and pharyngeal derivatives

38
Q

55hr Chick Prominent Structures

A

Limb buds, spinal ganglia

39
Q

55hr Chick New Structures

A

Pharyngeal arches, liver primordium

40
Q

55hr Chick Lost/Regressed Structures

A

Regressed yolk sac in central area

41
Q

55hr Chick Adjacent Structures

A

Somites extend along length

42
Q

55hr Chick Number of Somites

A

~26-28

43
Q

55hr Chick Size

A

?

44
Q

55hr Chick Flexure

A

subcephalic flexure

45
Q

55hr Chick Chick Turning

A

left-side down on the yolk

46
Q

55hr Chick Adult Derivatives of Primary Vesicles

A

Formation of hindbrain structures (pons, medulla), telencephalon expansion visible

47
Q

72hr Chick Prominent Structures

A

Limb buds, prominent brain regions

48
Q

72hr Chick New Structures

A

Allantois, further heart chambers

49
Q

72hr Chick Lost/Regressed Structures

A

Reduced cranial flexure

50
Q

72hr Chick Adjacent Structures

A

Tail fold forming

51
Q

v72hr Chick Number of Somites

A

36 pairs

52
Q

72hr Chick size

A

6mm

53
Q

72hr Chick Flexure

A

Cranial flexure reduces; tail flexure begins

practical moving exam (embryo) (1 decks)

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