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20 Cards in this Set
- Front
- Back
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30 hrs |
2 cell stage |
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day 3 |
morula |
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day 4 |
blastocyst -trophoblast -embryoblast |
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day 6 |
implantation L selectin Intergin: laminin, fibronectin zona pellucida disappears |
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day 7 |
bilaminar germ disc epiblast hypoblast syncytioblast and cytotrophoblast |
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day 8 |
amniotic cavity with epiblast amnioblast |
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day 9-10 |
fibrin plug primitive yolk sac heuser's/exocoelomic membrane |
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11-12 |
lacunar space extraembryonic coelom or chorionic cavity |
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13 |
stem villi, connecting stalk orophalangeal membrane |
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day 15 |
gastrulation: 1. primitive streak 2. 3 germ layers 3. notochord |
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day 16 |
allantios formation -early blood -urinary bladder -urachus (median umbilical ligament) |
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day 17 |
mesoderm layers form 1. paraxial 2. lateral plate 3. intermediate |
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day 18 |
cephalocaudally growth |
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day 19 |
appearance of notochord, neurulation |
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day 20-21 |
formation of neural fold and groove folds at somite 5 cranial to caudal heart tube fuses and beat |
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week 8 |
peritoneal, pleural and pericardial cavities |
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day 22-23 |
neural groove fuse, incomplete fusion.
still communication with amniotic fluid via cranial and caudal neuropores somite differetiation |
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day 24 |
neural tube and crest formation |
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day 25-26 |
closure of cranial neuropore |
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day 26-27 |
closure of caudal neuropore, neurolation complete. -dialations: brain vescicles |
