The umbilical cord contains
A) two umbilical arteries and one umbilical vein.
B) two umbilical arteries and two umbilical veins.
C) one umbilical artery and one umbilical vein.
D) one umbilical artery and two umbilical veins.
Correct Answer:
Verified
Q7: The stage of development that begins at
Q8: Implantation typically occurs approximately
A) 3 days after
Q9: What role is served by the ductus
Q10: Most of the organs are developed during
Q11: If the ductus arteriosus fails to close
Q13: Gestation typically lasts about
A) 40 weeks.
B) 42
Q14: Which extraembryonic membrane serves as the foundation
Q15: What is human chorionic gonadotropin, and what
Q16: What key developmental task initiates the beginning
Q17: Which statement about the amnion is accurate?
A)
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