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Biology Development

Animal development

QuestionAnswer
amnion protects the embryo with amniotic fluid
yolk sac food source for embryo
chorion gas exchange
allantois metabolic waste storage
amniotes creatures with vertebre that have terrestrial birth (some eggs)
somites primitive structure
notochord derived from cells in the mesoderm
how the egg pervents polyspermy triggers Na ion channels to open, chenging the polarity of the egg causing a fertilization envelope
how is the egg activated after fertilization Ca release in egg causes egg to rapidly increase its metabolism
Created by: licia001
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