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Author Question: Which period begins three weeks after conception? the embryonic period the fetal period the ... (Read 242 times)

stevenposner

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on: Jun 22, 2018
Which period begins three weeks after conception?
 
  the embryonic period
  the fetal period
  the gestational period
  the germinal period

Question 2

Which of the following structures is the first sign of a human body forming during the embryonic period?
 
  the neural tube
  the spinal cord
  the primitive streak
  the blood vessels


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xiaomengxian

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Reply #1 on: Jun 22, 2018
Answer to Question 1

the embryonic period

Answer to Question 2

the primitive streak


stevenposner

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Reply 2 on: Jun 22, 2018
Great answer, keep it coming :)

xiaomengxian

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Reply 3 on: Yesterday
Excellent

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