In general, the greatest vulnerability to teratogens occurs during the fetal period.
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Q23: Excessive drinking during pregnancy can cause fetal
Q24: By the fourth month of prenatal development
Q25: Stem cells are long, threadlike structures composed
Q26: A teratogen is a harmful agent or
Q27: The embryonic period is the second period
Q29: Newborn infants are equipped with reflexes that
Q30: A newborn child is extremely nearsighted.
Q31: The neural tube eventually thickens into three
Q32: The stepping reflex, grasping reflex, and rooting
Q33: The shortest phase of prenatal development is
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