Term
| 3 stages of fertilization |
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Definition
Penetration of corona radiata
binding and penetration of Zona pellucida via ZP3
Fusion of membranes of secondary oocyte and spermatozoon |
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Term
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Definition
Gift = gamete intrafallopian transfer.
ZIFT = zygote intrafallopian transfer
ICSI = intracytoplasmic sperm |
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Term
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Definition
Balstocyte implants
Implants with syncytiotrophoblast |
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Term
| Stages of human development |
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Definition
Embryo weeks 1-8: Crown to Rump
Zygote -> Morula -> blastula ->
Gastrula -> Neurala. Crown to rump length
Fetus: weeks 9 to birth. Crown to heel length |
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Term
| Establishment of uteroplacental circulation |
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Definition
Days 11-12
Lacunae form in sysctiotrophoblast.
ETC. |
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Term
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Definition
| Conversion of epiblast into the 3-germ layers by passing through the primitive streak |
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Term
| Differentiation of mesoderm |
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Definition
Intraembryonic mesoderm ->
Paraxial: axial skeleton and muscles
Intermediate: most of genitourinary system and cortex of adrenal gland
Lateral plate: Somatic and splanchnic |
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Term
| Partitioning of embryonic coelomic cavity |
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Definition
Primarily done by the pleuropeitoneal membrane.
Pleuropericardial membranes form the fibrous pericardium |
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Term
| Congenital diaphragmatic hernia |
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Definition
Failure of pleuro-peritoneal membranes to develop and seal.
Most common cause of pulmonary hypoplasia - babies die after birth.
Diagnosed and repaired prenatally |
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Term
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Definition
Made from Chorion(embryo) and decidua(maternal)
where nutrients in maternal/fetal blood are exchanged. |
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Term
| How does the uterine cavity fill up |
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Definition
| Week 12. Decidua parietalis comes into contact with chorion laeve. |
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Term
|
Definition
Structures passing through in week 5:
Connecting stalk: allantois, 2 arteres 1 vein
Yolk stalk = vitelline duct(accompanied by vitelline vessels)
The canal connecting the intraembryonic and extraembryonic cavities |
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Term
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Definition
Cilia beat and push FGF8 produce by neural crest cells to the left.
FGF8 induces Nodal and Lefty2.
Nodal and Lefty2 induce PITX2.
PITX2 is main left side factor |
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Term
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Definition
Asplenia(right)
polysplenia(left) |
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Term
| 2 places that do not have 3 layers after gastrulation |
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Definition
Buccopharyngeal membrane
Cloacal membrane: urogenital canal. |
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Term
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Definition
| Skin, CNS, PNS, Eyes, neural crest cells, internal ear |
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Term
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Definition
Bones
Connective tissue
Urogenital system
Cardiovascular system |
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Term
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Definition
| Gut and gut derivatives(liver, pancreas, lungs) |
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