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15 Cards in this Set
- Front
- Back
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Differentiation
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The process of a cell becoming specialized once this is done can't become unspecialized
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Embryonic Period
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First 8 weeks of development, systems are in place but not functioning
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Fetal Period
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wrest of the 36 weeks of development. Embryo gets bigger, and systems become functional
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Adult Body Tube
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Starts with Skin on outside
Coelom hole in center Serous membrane lines the inside Body wall between coelom and skin Gut tube forms in coelom top |
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Body Tube (Dorsal Wall)
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in body wall vertebrae and nerve cord form.
laterally to this kidneys and retroperitoneal form. |
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Early Events
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Ovulation
Fertilization Cleavage Implantation |
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Ovulation
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When egg becomes developed becomes a blister which starts bulging out on suface. It pops egg withing goes through cellum
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Oviduct
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like projection called fimbria. When fimbria find blister they find it and catch the egg.
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Fertilization
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Sperm whose head is DNA and tail Flagellum fertilize egg in the oviduct
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Zygote
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Fertilized egg
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Early Cleavage
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Special type of cell division; during cleavage daughter cells are half the size of original
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Morula
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Solid ball of cells formed from the early cleavage division
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Blastocyst
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Single layer of cells that make up the outer wall known as trophoblasts
Cells in trophoblasts to not distribut to embryo devlopes into supporting structures used to help devlop not to creat things example plecenta |
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Blastocoel
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Inner space being inclosed by trophoblasts
clump of cells off to one side known as inner cell mass ICM |
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Implantation
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blastocyst goes to the uterous
Ueterion wall has become thick and vascular for embrio arrival Embryo burrows into uteren wall |
