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 second weeks of prenatal development are called the fetal perioD.

Question

Quizplus · Accepted Answer

The heart begins to beat during the embryonic period, which is the stage of prenatal development that lasts from week 3 to week 8 after fertilization.

Option B is incorrect because the rate of cell differentiation increases during the embryonic period.

Option C is incorrect because the intestinal tract develops during the embryonic period, not the fetal period.

Option D is incorrect because the first two weeks of prenatal development are called the germinal period, not the fetal period.

Which of the Following Statements Is True of Prenatal Development