Which one of the following blood vessels in the fetus has the highest concentration of oxygen:
A) umbilical arteries
B) inferior vena cava
C) ductus venosus
D) ductus arteriosus
E) left atrium
Answer: C
Which one of the following blood vessels in the fetus has the highest concentration of oxygen:
A) umbilical arteries
B) inferior vena cava
C) ductus venosus
D) ductus arteriosus
E) left atrium