What is the function of the placenta?
A.
to allow the mixing of the mother's blood with the blood of the fetus
B.
to exchange nutrients and waste
C.
to keep the fetus warm
D.
to stop the fetus from moving
Exam No：0653_w24_qp_23 Year：2024 Question No：12
Answer:
B
Knowledge points:
B14 Reproduction
Solution:
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