3 years ago

In human pregnancy, which organ(s) form first and last?

2 answers:

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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.

goldfiish [28.3K]3 years ago

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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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2 years ago

In human pregnancy, which organ(s) form first and last?​

In human pregnancy, which organ(s) form first and last?