Author Question: The first organ system that shows any sign of activity is the: respiratory system. digestive ... (Read 174 times)

skymedlock

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The first organ system that shows any sign of activity is the:
 
  respiratory system.
  digestive system.
  nervous system.
  cardiovascular system.

Question 2

The neural tube will become the
 
  reproductive organs.
  intestinal tract.
  brain and spinal cord.
  backbone, legs, and arms.



frogdreck123456

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Answer to Question 1

cardiovascular system.

Answer to Question 2

brain and spinal cord.



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