How does the fetus obtain nutrients and oxygen?
A. Maternal and fetal veins are directly connected in the chorionic villi.
B. Nutrients and oxygen diffuse into the umbilical capillaries from maternal blood pools that surround the chorionic villi.
C. Maternal blood cells are carried across the fetal capillary walls through special pores.
D. Maternal arteries and fetal veins are directly connected in the chorionic villi.
E. Fetal and maternal blood pools around the chorionic villi to exchange gasses and nutrients. The blood is then returned to the umbilical vein.
B. Nutrients and oxygen diffuse into the umbilical capillaries from maternal blood pools that surround the chorionic villi.
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What will be an ideal response?
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