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Author Question: The first organ system that shows any sign of activity is the: respiratory system. digestive ... (Read 158 times)

skymedlock

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

cardiovascular system.

Answer to Question 2

brain and spinal cord.


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