embryology

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Author:
sthomp88
ID:
51066
Filename:
embryology
Updated:
2010-12-06 02:16:22
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quiz one
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Description:
ch. 1-3 1
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  1. sperm = egg =
    zygote
  2. which is not one of the periods of prenatal development?
    preimplantation
    embryonic
    fetal
    primoridium
    primoridium
  3. _________is the time frame for the embryonic period
    week 2-8
  4. they zygote must travel from the____________to the uterine wall
    fallopian tube (fertilization site)
  5. the blastocyst consists of which layers?
    embryoblast and trophoblast
  6. an ectopic pregnancy occurs when what?
    the zygote implants anywhere other than the uterine wall
  7. what is the correct order of the developmental procss from beginning to end?
    induction, proliferation, differentiation, morphogenesis, maturation
  8. histodifferentiation is the development of different________in a structure
    tissues
  9. which process involves embryonic cells becoming distinct structurally and functionally?
    differentiation
  10. which process involves controlled cellular growth?
    proliferation
  11. The bilaminar embryonic disc consists of which layers?
    epiblast and hypoblast
  12. what serves as initial nourishment for the embryonic disc?
    yolk sac
  13. the trilaminar embryonic disc has 3 distinct layers, please list them
    • ectoderm
    • mesoderm
    • endoderm
  14. the placenta develop from interactions between the endometrial tissues and___________
    trophoblast layer
  15. what structure resembles a bum?
    primitive streak
  16. the cloacal membrane will give rise to what?
    the terminal end of the digestive tract
  17. which of these does not come from endoderm?
    respiratory system linings
    digestive system linings
    liver cells
    epidermis
    epidermis
  18. What is one harmful thing that can cross through the placenta?
    alcohol

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