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Related Flashcards
Cards In This Set
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Amnionic cavity
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Closed sac between embryo and amnion that contains amnionic fluid which nourishes and protects developing baby
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Blastocyst
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Pluripotent embryonal stem cellshas a fluid filled cavityhas trophoblasts and embryoblastsimplanted about 6 days after fertilization in uterus
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Blastomeres
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Two daughter cells of the zygotetotipotent
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Blastula
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Step after morula before blastocystdoes not have embryoblasts but has a fluid filled cavity
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Cleavage
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Rapid mitotic division of a zygote
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Conception
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Fertilization=beginning of life=formation of diploid cell=fusion of gametes=formation of zygote(usually occurs in ampulla of fallopian tube)
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Ductus arteriosus
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Blood vessel which connects the pulmonary artery to the aortic arch in a baby.allows blood to flow from right ventricle to bypass the babes developing lungs
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Ectopic pregnancy
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Complication where embryo implants outside the uterine cavity, very dangerous because internal hemorrhage can occurusually they occur in the fallopian tube
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Embryo
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Multicellular diploid eukaryote from the first cell division until about 8 weeks after fertilization
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Embryoblast
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Inner cell mass- mass cells in the primordial embryo that eventually gives rise to the structures of the fetus. it forms in the earliest stages before implantation
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Embryonic disc
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Forms the floor of the amnionic cavity
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Epiblast
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Tissue type derived from inner cell mass, above the hypoblastit becomes the primary ectoderm
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Fertilization
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Conception- the fusion of gametes to produce a new organism
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Fetus
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Developing baby after embryonic stage and before birth starts in the 9th week after fertilization
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Gamete
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An egg and sperm cell
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