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9 Cards in this Set
- Front
- Back
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aristotle
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ovoviviparity, viviparity, oviparity, first embryologist, 2 major cell division patterns (holoblastic and meroblastic), functions of placenta and umbilical cord, epigenesis
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william harvey
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ex ovo omnia, first to see blastoderm, "island of small cells" before heart, epigenesis
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malphigi
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preformation, with hartsoeker and leuwenhoek
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albrecht von haller/charles bonnet
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preformation but knew that organs may develop at different rates and structures may not be in same place as in newborn
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kaspar friedrich wolff
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embryonic parts from tissues w/ no counterpart in the adult organism, parts that are supposed to be there as in heart is seen to develop anew, intestinal tube from flat tissue, vis essentialis,
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immanuel kant/johann friedrich blumenbach
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bildungstrieb, fr germ cells
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christian pander
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germ layers,
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heinrich rathke
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emphasized similarities in devt of vertebrate group, parhyngeal arches, formation of vertebrate skull, reproductive, excretory, resp system, rathke's pouch
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karl ernst von baer
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discovered the notochord,mammalian egg
von baer's laws: 1. the general features of a large grp of animals appear earlier, in development than do the specialized features of a smaller group. 2. less gen characteristics develop from the more gen, until finally the most specialized appear 3. the embryo of a given species, instead of passing thru the adult stage of lower animals, departs more from them 4. the early embryo of a higehr animal is never like a lower animal, but only likes its early embryo |
