lab 17 implantation

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4 Terms

1
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villi

  • syncytial trophoblast extends finger-like extensions into endometrium

    • villi grow to surround uterine glands and endometrial capillaries

2
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uterine glands

  • villi grow into uterine glands

  • glands then release nutrients that are absorbed by trophoblast

    • nutrients spread to rest of blastocyst cells via diffusion

3
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lacunae

  • villi grow around endometrial capillaries

  • capillary walls break down to form lacunae containing maternal blood

  • bring oxygen to blastocyst

  • compartments of maternal blood

4
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amnion

  • cells from epiblast migrate to separate amniotic cavity from trophoblast

  • one of four embryonic membranes