Which of the following structures contributes to the structure of the placenta as well as completely surrounding the embryo?
A)chorion
B)amnion
C)yolk sac
D)allantois

Question

Quizplus · Accepted Answer

The chorion is the outermost membrane that completely surrounds the embryo and contributes to the structure of the placenta. The amnion is an inner membrane that encloses the embryo in fluid. The yolk sac and allantois are also membranes that play a role in early embryonic development, but they do not contribute to the structure of the placenta or completely surround the embryo.

Which of the Following Structures Contributes to the Structure of the Placenta