What is the foetal part of Choriovitelline placenta (or Yolk-sac placenta) formed of?
It is formed of chorion and yolk sac? Why's the vitelline in the name?
1
Expert's answer
2016-12-01T12:17:14-0500
A a foetal portion of Choriovitelline placenta is formed by the chorion. Choriovitelline placenta is a type of placenta in which the yolk sac becomes an intermediary in the fetal-maternal relationship. There the vitelline takes up the whole of the inner embryonic layer and surrounds the embryo. The allantois shrinks.
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