Bio CH 47 – Flashcards
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The first stage of embryonic development is _____. This process produces _____.
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cleavage... a cluster of cells
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The mesoderm gives rise to _____.
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skeletal and muscular systems
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Birds, reptiles, and mammals are called "amniotes" because _____.
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they have extra-embryonic membranes that develop an aqueous environment in which development occurs
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Embryonic cells especially active in assuring nutritional exchange between a pregnant woman and her embryo are found in the _____.
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trophoblast
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An embryonic cell that is "totipotent" is one that can _____.
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by itself, give rise to the entire embryo, as cleavage proceeds
