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18 Cards in this Set
- Front
- Back
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fertilization
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fusion of egg and sperm, forming a zygote
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cleavage
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rapid cell division, without much growth between divisions
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gastrulation
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mass cell movements to generate three germ layers
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organogenesis
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localized changes in tissue and cell shape
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blastomere
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one of the small cells formed in the process of cleavage
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morula
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the "early blastula". a ball of cells, which has started to hollow out, midway through the process of cleavage
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blastula
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a hollow ball of cells. formed when cleavage is completed
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blastocoel
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the cavity in the blastula
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ectoderm
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Forms the outer layer of the gastrula
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endoderm
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Lines the embryonic digestive tract
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mesoderm
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Partly fills the space between the endoderm and ectoderm
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notochord
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rod that runs along the dorsal side of a chordate embryo
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neural plate
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layer of ectoderm above the notochord
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neural tube
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forms from the neural plate. it will develop into the central nervous system.
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somites
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blocks of mesoderm lateral to the notochord
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coelom
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body cavity
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archenteron
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digestive cavity
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convergent extension
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morphogenetic movement in which the cells of a tissue become narrower and longer
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