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Embryology Overview Flashcards

1
Q

Zygote

A

Leads to:
ICM
Morula

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2
Q

Morula

A

From: Zygote

Leads to: Blastocyst

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3
Q

Blastocyst

A

From: Morula, hypoblast

Leads to: Trophoblast

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4
Q

Trophoblast

A

From: Blastocyst

Leads to: Cellular trophoblast, syncytial trophoblast

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5
Q

Cellular trophoblast

A

From: Trophoblast

Leads to: Chorion

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6
Q

Chorion

A

From: Cellular trophoblast

Leads to: Placena

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7
Q

Placenta

A

From: Chorion, decidua, umbilical cord

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8
Q

Decidua

A

Leads to: Placenta

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9
Q

Hypoblast

A

From: ICM

Leads to: Blastocyst, extra-embryonic mesoderm

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10
Q

Extra-embryonic mesoderm

A

From: Hypoblast

Leads to: Stalk

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11
Q

Syncytial trophoblast

A

From: Trophoblast

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12
Q

Stalk

A

From: Extra-embryonic mesoderm

Leads to: Umbilical cord

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13
Q

Umbilical cord

A

From: Stalk, allantois

Leads to: Placenta

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14
Q

Allantois

A

From: Endoderm

Leads to: Umbilical cord

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15
Q

Extra-embryonic sacs

A

From: Amnion, yolk sac lining

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16
Q

Epiblast

A

From: ICM

Leads to: Amnion, epiblast proper

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17
Q

Yolk sac lining

A

From: Hypoblast

Leads to: Extra-embryonic sacs

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18
Q

Amnion

A

From: Epiblast

Leads to: Extra-embryonic sacs

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19
Q

Epiblast proper

A

From: Epiblast

Leads to: Endoderm, mesoderm, ectoderm

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20
Q

Endoderm

A

From: Epiblast proper

Leads to: Allantois, gut walls and glands

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21
Q

Ectoderm

A

From: Epiblast proper

Leads to: Trunk, Neural plate, non-neural ectoderm

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22
Q

Mesoderm

A

From: Epiblast proper

Leads to: Head, trunk

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23
Q

Head

A

From: Mesoderm

Leads to: Somitomeres

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24
Q

Somitomeres

A

From: Head

Leads to: Pharyngeal arches

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25
Pharyngeal arches
From: Somitomeres | Leads to: Head structures
26
Gut walls and glands
From: Endoderm
27
Trunk
From: Mesoderm | Leads to: Lateral plate mesoderm, intermediate mesoderm, somites
28
Lateral plate mesoderm
From: Trunk | Leads to: Visceral and parietal lateral plate mesoderm
29
Visceral lateral plate mesoderm
From: Lateral plate mesoderm | Leads to: Walls of peritoneal cavity
30
Parietal lateral plate mesoderm
From: Lateral plate mesoderm | Leads to: Limb buds
31
Walls of peritoneal cavity
From: Visceral lateral plate mesoderm
32
Intermediate mesoderm
From: Trunk
33
Non-neural ectoderm
From: Ectoderm | Leads to: Hair, nails, epidermis
34
Hair/nails/epidermis
From: Non-neural ectoderm
35
Neural plate
From: Ectoderm | Leads to: Neural tube, neural crest
36
Neural tube
From: Neural plate | Leads to: Brain, spinal cord
37
Brain
From: Neural tube
38
Spinal cord
From: Neural tube
39
Neural crest
From: Neural plate
40
Dermatome
From: Somites | Leads to: Dermis, connective tissue
41
Myotome
From: Somites | Leads to: Skeletal muscles
42
Sclerotome
From: Somites | Leads to: Vertebrae and ribs
43
Syndetome
From: Somites | Leads to: Tendons
44
Limb buds
From: Parietal lateral plate mesoderm
45
Somites
From: Trunk mesoderm | Leads to: Dermatome, syndetome, sclerotome, myotome
46
Day 1
Fertilisation Blastomere Cleavage
47
Day 2
Early morula Compaction Blastula
48
Day 3
Late morula
49
Day 4
Enters uterine cavity | Hatching
50
Day 5
Full blastocyst | Trophoblast and ICM form
51
Day 6
ICM orients towards endometrium | Adplantation
52
Day 7
Endometrium enlarges and becomes vascularised | Blastocyst buries into endometrium
53
Day 8
Full implantation | Yolk sac and amnion formation
54
Day 9
Syncytial trophoblast expands Lacunae develops hCG present
55
Day 10
Bilaminar embryonic disc
56
Day 11
Epiblast and hypoblast develop
57
Day 12
Lacunae fuse - maternal sinusoids form Mesenchyme forms Extra-embryonic coelom forms
58
Day 13
Chorion forms
59
Day 14
Chorionic cavity forms
60
Day 15
Gastrulation starts
61
Day 16
Primitive node forms
62
Day 17
Somitogenesis
63
Day 18
Neurulation
64
Day 19
Main divisions of the brain visible
65
Day 20
Primary brain vesicles visible
66
Day 21
Cardiogenesis
67
Week 4
Notochord forms Organ formation Heart begins to beat Buccopharyngeal membrane forms connection from mouth to pharynx
68
Week 5
Pharyngeal arches Limb buds Vascular development
69
Week 6
Secondary brain vesicles form brain parts
70
Week 7
Cloacal membrane forms openings of anus, urinary and reproductive tracts

Bioscience (10 decks)

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