Which of the following is not true of the umbilical cord?
A) It is directly connected to the placenta.
B) There are two umbilical arteries and one umbilical vein.
C) The umbilical arteries transport oxygen-rich blood from the placenta to the embryo.
D) The allantois forms part of the umbilical cord.
E) All of these are true of the umbilical cord.
Correct Answer:
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