breannlowe2001
breannlowe2001 breannlowe2001
  • 11-01-2020
  • Health
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In human pregnancy, which organ(s) form first and last?​

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20alondra04
20alondra04 20alondra04
  • 11-01-2020
First is the brain, spinal cord, and heart begin to develop. Then A blood vessel forms which will later develop into the heart and circulatory system.
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joannarules101
joannarules101 joannarules101
  • 11-01-2020
The sperm is the smallest cell in human biology, but also one of the most complex. The egg meanwhile is the largest cell and similarly intricate.
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