Embryonic Development Stages

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Questions and Answers

During which period of development do body systems and structures begin to form?

  • Fetus
  • Morula
  • Blastocyst
  • Embryo (correct)

What is the recommended daily intake of folic acid for pregnant women?

  • 600 micrograms
  • 800 micrograms
  • 200 micrograms
  • 400 micrograms (correct)

During which period is the embryo most vulnerable to major birth defects?

  • Embryo (correct)
  • Morula
  • Blastocyst
  • Fetus

What is the primary focus of development during the fetal period?

<p>Growth of all major structures (D)</p> Signup and view all the answers

What type of birth defects typically occur during the fetal period?

<p>Small size, mental retardation, and defects in the eyes, ears, and external genitalia (D)</p> Signup and view all the answers

What is the purpose of taking folic acid supplements during pregnancy?

<p>To prevent Spina bifida and anencephaly (B)</p> Signup and view all the answers

During which stage of development is the formation of the bilaminar embryonic disc?

<p>Blastocyst (D)</p> Signup and view all the answers

What is the consequence of teratogen exposure during the blastocyst stage?

<p>Loss of the entire conceptus (B)</p> Signup and view all the answers

What is the timeframe when all major organ systems develop?

<p>Week 3 to 8 (C)</p> Signup and view all the answers

What is the purpose of taking folic acid supplements before conception and for at least 3 months afterward?

<p>To prevent Spina bifida and anencephaly (D)</p> Signup and view all the answers

During which stage are birth defects usually not as severe?

<p>Fetus (A)</p> Signup and view all the answers

What is the result of taking at least 400 micrograms of folic acid daily?

<p>Reduced risk of Spina bifida and anencephaly (C)</p> Signup and view all the answers

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