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Ryan's shit list - Step 1 > RSL - Repro - Embryology > Flashcards

RSL - Repro - Embryology Flashcards

(62 cards)

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1
Q

Sonic Hedgehog gene: Production

A

at base of limbs

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2
Q

Sonic Hedgehog gene: action

A

Patterning along anterior to posterior axis

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3
Q

Wnt-7 gene: production

A

At apical ectodermal ridge

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4
Q

Wnt-7 gene: action

A

Patterning along Dorsal-ventral axis

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5
Q

FGF gene: production

A

Apical ectodermal ridge

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6
Q

FGF gene: Action

A

Stimulates mitosis of underlying mesoderm –> lengthening of limb

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7
Q

Homeobox (Hox) genes: action

A

Segmentation of embryo in Craniocaudal direction. (mutations –> appendages in wrong locations)

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8
Q

HCG and implantation of blastocyst: Week _

A

1

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9
Q

Bilaminar disk (epiblast, hypoblast): Week _

A

2

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10
Q

Gastrulation: Week _

A

3

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11
Q

Neural tube formation: week _

A

4

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12
Q

Extremely sensitive to teratogens: Weeks _

A

4-8

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13
Q

Heart beats: week _

A

4

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14
Q

4 limbs: week_

A

4

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15
Q

Genetalia: week_

A

10

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16
Q

Embyologic origins: Lens of eye

A

Surface ectoderm

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17
Q

Embyologic origins: Sensory organs of ear

A

Surface ectoderm

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18
Q

Embyologic origins: Anal canal below pectinate line

A

Surface ectoderm

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19
Q

Embyologic origins: Oral cavity

A

Surface ectoderm

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20
Q

Embyologic origins: Parotid, sweat, mammary glands

A

Surface ectoderm

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21
Q

Embyologic origins: Oligodendrocytes

A

Neuroectoderm

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22
Q

Embyologic origins: PNS

A

Neural crest

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23
Q

Embyologic origins: Shwann cells

A

Neural crest

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24
Q

Embyologic origins: Melanocytes

A

Neural crest

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25
Embyologic origins: Parafollicular (C ) cells
Neural crest
26
Embyologic origins: Pia and arachnoid
Neural crest
27
Embyologic origins: Bones of skull
Neural crest
28
Embyologic origins: Aorticopulmonary septum
Neural crest
29
Embyologic origins: Serous linings of body cavities
Mesoderm
30
Embyologic origins: Spleen
Mesoderm
31
Embyologic origins: Testes/ovaries
Mesoderm
32
Embyologic origins: Dermis
Mesoderm
33
Embyologic origins: Vagina
Mesoderm
34
Embyologic origins: cardiovascular structures
Mesoderm
35
Embyologic origins: kidneys
Mesoderm
36
Embyologic origins: Adrenal cortex
Mesoderm
37
Embyologic origins: Bone
Mesoderm
38
Embyologic origins: Odontoblasts
Neural crest
39
Embyologic origins: Astrocytes
Neuroectoderm
40
Embyologic origins: Ependymal cells
Neuroectoderm
41
Embyologic origins: Gut tube
Endoderm
42
Embyologic origins: most of urethra
Endoderm
43
Embyologic origins: Luminal epithelial derivatives
Endoderm
44
Embyologic origins: Liver
Endoderm
45
Embyologic origins: Pancreas
Endoderm
46
Embyologic origins: Lungs
Endoderm
47
Embyologic origins: Eustatian tube
Endoderm
48
Embyologic origins: thymus
Endoderm
49
Embyologic origins: Parathyroid
Endoderm
50
Embyologic origins: Thyroid follicular cells
Endoderm
51
Embryologic origins: ANS
Neural crest
52
Errors in morphogenesis: Disruption
secondary breakdown of previously normal tissue (amniotic band)
53
Errors in morphogenesis: Deformation
Extrinsic disruption; occurs after embryonic period
54
Errors in morphogenesis: Malformation
Intrinsic disruption; Occurs during embryonic period (3-8weeks)
55
Monozygotic twinings days: Dichorionic Diamnionic
0-4 days (25%) (2 cell stage)
56
Monozygotic twinings days: monochorionic Diamnionic
4-8 days (75%) (Morula)
57
Monozygotic twinings days: Monochorionic Monoamniotic
8-12 days (
58
Monozygotic twinings days: monochorionic monoamniotic conjoined twins
>13 days (formed embryonic disk
59
Allantois --> (embryonic derivation)
Umbilical arteries and Vein
60
Allantois --> (adult)
Urachus
61
Allantois formation: week_
3
62
Vitelline duct obliteration: week_
7

Ryan's shit list - Step 1 (27 decks)

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