In the course of prenatal development, by the end of the _____ period, the heart begins to beat, the arms and legs become more d
ifferentiated, the face starts to form, and the intestinal tract appears in human beings.
1 answer:
Answer: Embryonic period
Explanation: During the Embryonic period, the three germ layers form the tissues and main organ systems. Infact the body becomes recognizably human.
It is between weeks 3-8 of development.
It is during this period of development that the conceptus is most likely to develop a major congenital malformation.
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