A pregnant woman is confused about the terms "embryo" and "fetus." How does the nurse explain the difference?
A. "The baby can't be called a fetus until the limbs and organs have formed."
B. "The baby is an embryo until 8 weeks' gestation; then it is called a fetus."
C. "There really isn't any difference between the terms; they are interchangeable."
D. "Your baby is a fetus until the kidneys are matured and he makes urine."
ANS: B
During the first 8 weeks of gestation, the baby is called an embryo. By the end of the eighth week, the embryo has developed enough to be called a fetus. The other statements are inaccurate.
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