All organ systems in a human embryo have formed by ___.
A) week eight.
B) the 5th day.
C) week 5.
D) week 6.
E) the eighth month.

Name: All organ systems in a human embryo have formed by ___. A) week eight. B) the 5th day. C) week 5. D) week 6. E) the eighth month.
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Question

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By week eight of embryonic development, all major organ systems have formed, although they continue to mature and develop throughout the remainder of the pregnancy.

All Organ Systems in a Human Embryo Have Formed by ___