The human fetus has special characteristics that allow it to survive even though its organs are not fully developed. Which vein allows blood to bypass the fetal liver?
A)Inferior vena cava
B)Ductus venosus
C)Placental vein
D)None of the above

Question

Quizplus · Accepted Answer

The liver is not properly developed in a fetus and will not properly filter the blood; therefore, the ductus venosus allows blood to avoid the fetal liver and go directly to the mother for filtration.

The Human Fetus Has Special Characteristics That Allow It to Survive