In prenatal development, the umbilical cord connects the
A) neural tube to the placenta.
B) placenta to the amniotic sac.
C) amniotic sac to the embryo.
D) embryo and fetus to the placenta.
E) embryo and fetus to the amniotic sac.
Correct Answer:
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Q9: The fetal stage of prenatal development lasts
Q10: In prenatal development, the time between conception
Q11: According to the stages of development presented
Q12: What is the correct order of stages
Q13: Which of the following structures acts as
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Q17: The protective environment inside the mother's uterus
Q18: A fertilized egg cell is called a(n)
A)teratogen.
B)zygote.
C)fetus.
D)embryo.
E)placenta.
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