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22 Cards in this Set
- Front
- Back
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what is found in the primordial cells
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primary oocyte
zona pellucida follicular cells (supporting layer) |
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what is an antrum
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fluid filled cavity around the follicular cell layer in the transition to the secondary follicle
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where does fertilization occur?
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ampulla
fimbriated end of the uterine tube |
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______ cells surround the embryoblast which contributes to the placenta and etraembryonic membranes
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trophoblast
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the inner cell mass turns into what two layers
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epiblast and hypoblast
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trophoblast cells invade the endometrium further and form the _________ and ________
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synctiotrophoblasts and cytotrophoblasts
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T or F. Both the epiblast and hypoblast cavitate
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true
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the epiblast cavitates to form the __________ and the the hypoblast to the ________
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primitive amniotic cavity
primitive yolk sac |
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what makes up the amnion
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primitive amnion and extraembryonic mesoderm
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what makes up the chorion
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trophoblast and extraembryonic mesoderm
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what space separates the chorion from the embryo, amnion, and olk sac
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extraembryonic coelem
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what are the "packing peanuts"
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extraembryonic mesoderm
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define gastrulation
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development of emryonic mesoderm and definitive endoderm to develop the basic vertebrate body plan
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when the bilaminar becomes trilaminar, what is the filling
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intraembryonic mesoderm
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the ______ ______ forms at the caudal midline of the epiblast
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primitive streak
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cells migrate from the epiblast medially toward the streak to form the _____ ______
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primitive grove
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the ______ is a tightly condesned mass of intraembryonic mesoderm that results from epiblastic cells that migrate cranially after dropping through the primitive node
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notocord
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what two places do not have the mesoderm
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oral plate
anal plate |
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what does the ectoderm (epiblast) form
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skin and nervous
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what does the endoderm form (hypoblast)
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epithelial lining of the gut tube and derivatives of the gut tbe
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define embryo
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<8 weeks
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define fetus
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8-36 weeks
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