A) Yolk sac
B) allantosis
C) amnion
D) chorion
Correct Answer: D
Solution :
The foetal part of the placenta in man is formed' by the corionic villi which lie in the matcma' blood pool, formed by the erosion of uterine endometrium and endothelial wall of uterine blood vessels to form the haemochorial placenta.
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