单选题
1分
Which of the following functions would the nurse expect to be unrelated to the placenta?
参考答案: D
参考解析: Fetal immunities are transferred through the placenta, but the maternal immune system is actually suppressed during pregnancy to prevent maternal rejection of the fetus, which the mother's body considers a foreign protein. Thus, the placenta isn't responsible for the production of maternal antibodies. The placenta produces estrogen and progesterone, detoxifies some drugs and chemicals, and exchanges nutrients and electrolytes.