Author Question: Which stage of the embryo's tissue development becomes the nerves, brain, and spinal cord, and is ... (Read 40 times)

Mimi

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Which stage of the embryo's tissue development becomes the nerves, brain, and spinal cord, and is when any neural tube defects may occur?
 
  A) first
  B) second
  C) third
  D) fourth

Question 2

Which fetal support system links the mother's bloodstream to the baby's blood vessels?
 
  A) umbilical cord
  B) amniotic fluid
  C) placenta
  D) uterus



Edwyer

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Answer to Question 1

Answer: A

Answer to Question 2

Answer: A



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