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3 Cards in this Set

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  • Back
gastrulation
occurs during week 3. process that produces all 3 germ layers (endoderm, mesoderm, and ectoderm) starts with primitive streak. Epiblast gives rise to all 3 germ layers
Describe the formation of the notochord
group of mesodermal cells migrate cranial in the midline to the prechordal plate notochordial process is a tube. then shifts towards the endoderm. floor of the notochord process and endoderm fuse now process is now called notochordal plate
what is the significance of the capillaries in tertiary villi
they hook up with the intraembryonic circulatory system linking the placenta and embryo