Multiple Choice
Which of the following statements is true of prenatal development in humans?
A) The heart begins to beat during the embryonic period.
B) The rate of cell differentiation decreases during the embryonic period.
C) The intestinal tract first appears in the fetal period of prenatal development.
D) First and the second week of prenatal development are called the fetal period.
Correct Answer:

Verified
Correct Answer:
Verified
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