Embryology

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9 Terms

1
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What are the in utero stages of development?

  • Preembryonic ( conception to 2 wks)

  • Embryonic (2-8 wks)

  • Fetal (end of 8th wk to birth)

2
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Why is the preembryonic stage not susceptible to teratogens?

Because this is the travel time where there is no placental barrier for the teratogens to cross

3
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When does CNS development occur during embryonic development?

CNS development is non-stop.

4
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What are the 4 main events from conception to Week 5?

  • Fertilization to Blastocyst and Implantation (Day 1 - Day 12)

  • Embryonic Disc/Gastrulation (Day 13-Day 21)

  • Morphogenesis (Day 22 - Day 60)

  • The Baby Grows

5
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What is the Inner Cell Mass?

6
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What is the Trophoblast?

7
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What is the Endometrium?

8
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What is the amniotic cavity?

9
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What is the yolk sac?