Final answer:
The statement about Zulu women eating a lion's heart for a strong and healthy child is not scientifically supported. It's part of traditional beliefs, but modern health guidelines stress the importance of safe and nutritious maternal diets for fetal development.
Step-by-step explanation:
The belief that if a pregnant Zulu woman eats the heart of a lion, her child will be born strong and healthy is not a scientifically supported fact. While it is a part of some traditional beliefs, there is no evidence from modern biomedicine to support this claim. The health and strength of a child are influenced by various factors, including genetics, prenatal care, and the health of the mother during pregnancy. Also, it's important to note that a pregnant woman's diet and environment can affect the developing fetus. The placenta does provide nourishment and oxygen to the fetus, but it is essential that what the mother consumes is safe and nutritious. The statement regarding the umbilical artery is false; the two umbilical arteries carry oxygen-depleted blood from the fetus to the placenta, while the one umbilical vein carries oxygen-rich blood from the placenta back to the fetus.