The extra-embryonic membranes of the mammalia | vedclass

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Question

(D) The extra-embryonic membranes (such as amnion,chorion,allantois,and yolk sac) are essential structures that support the development of the embryo.

Vedclass · Accepted Answer

Trophoblast

Vedclass · Answer

(D) The extra-embryonic membranes (such as amnion,chorion,allantois,and yolk sac) are essential structures that support the development of the embryo.In mammals,these membranes are derived from the trophoblast cells of the blastocyst.The inner cell mass gives rise to the embryo proper,whereas the trophoblast differentiates into the extra-embryonic tissues that form the placenta and associated membranes.

The extra-embryonic membranes of the mammalian embryo are derived from

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