Yolk sac extraembryonic membrane is responsible for red blood cell production during early development.
An extraembryonic membrane that extends from the yolk sac into the connecting stalk. together with the yolk sac, it acts as a supply for embryonic blood cells. Chorion: The outermost extraembryonic membrane derived from the trophoblast of the blastocyst.
An extraembryonic membrane is one of the membranes which assist inside the development of the embryo. Such membranes rise up in a ramification of animals from humans to insects. They originate from the embryo, but aren't considered part of it. They typically carry out roles in nutrients, fuel trade, and waste removal.
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